{"type":"firestarter.listing","listing":{"id":"lst_NMSOZ_ac","product_name":"Soul Performance Porsche 981 GT4 / Boxster Spyder / Clubsport SOUL Street Package","category":"Exhaust","description":"Expect a sophisticated sound with valves closed and a flat-six wail with valves open by pairing our Valved Exhaust System with Long Tube Street Headers for performance gains without a check engine light. Soul Performance Products Long Tube Street Headers are built around large diameter, free flowing catalytic converters with long tube runners for maximum gains in power, throttle response, and flat-six engine tone. With valves closed the exhaust tone is perfect for a daily driven car – have no worries about being fatigued by excessive volume or droning. Once the valves open, be prepared to seduce all who surround you with an intoxicating symphony as the full tone of the flat six makes it way out the straight-through exhaust flow path and exits through stylish tips of your choosing. We’re proud to offer you the perfect exhaust solution and back it up with an industry leading Lifetime Warranty.\nPACKAGE INCLUDES:Soul Performance Products 981 GT4 / Boxster Spyder Valved Exhaust SystemSoul Performance Products 981 GT4 / Boxster Spyder Long Tube Street Headers\nDETAILS+  Fits all 981 Porsche GT4 / Boxster Spyder / Clubsport vehicles (2015-2016)+  Added performance without a check engine light+  Direct bolt on installation – instructions included+  Choose from a variety of tip styles and finishes – or customize your own!+  All Soul Performance Products exhaust components are backed by a renowned Lifetime Warranty for both street and track use\nDescription\nDEVELOPMENT AND TESTING:  By creating a unique application for the 981 platform, we’ve focused on sizing the runners (2”) and collectors correctly to extract maximum power from the 3.4L engine while producing great gains from the 2.7L as well. We chose high-flow catalytic converters of an appropriate size to encourage maximum power gains. Don’t settle for smaller, cheaper catalysts when power and durability is concerned. We wanted to be certain that our system offered a superior spectrum of sound – Cup car inspired with valv","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Long-Tube-Street-Headers-Product-Underside-510x340_a2102d3d-f36d-47b4-becb-6f875489e7e1.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Long-Tube-Street-Headers-Product-510x340_97e623bb-948b-4e19-b350-053f03eac30d.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_9541-510x340_a6d9d58f-036e-48f1-8f42-139e99c15f67.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Long-Tube-Street-Headers-Flange-510x340_1.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Porsche-981-Boxster-Cayman-Valved-Exhaust-System-Installed.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Chrome-Tips-510x340_9698e579-30af-4659-987a-330994f3fbd7.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_8436-510x277_73e23cfd-36fb-4d18-96c2-4cbd62f3533b.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Porsche-981-Boxster-Cayman-Valved-Exhaust-System-Tips-510x323_19128df8-34c0-4298-b620-4df241516583.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Long-Tube-Street-Headers-Fabrication-1_549cb4be-69bf-476f-9e80-14355248b853.webp?v=1772234898","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Valve-Controller-Kit-510x340_118c8080-2db2-4e45-8cbd-8ead30065fbf.webp?v=1772234804"],"price":8570,"currency":"USD","in_stock":true,"inventory_qty":99990,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:21.409Z"},"share_url":"https://firestarter.network/l/lst_NMSOZ_ac","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_NMSOZ_ac' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Soul Performance Porsche 981 GT4 / Boxster Spyder / Clubsport SOUL Street Package' and a budget_max comfortably above $8570.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}