{"product_id":"speed-engineering-1979-2004-mustang-gen-v-lt-swap-1-7-8-longtube-headers","title":"Speed Engineering 1979-2004 Mustang Gen V LT Swap Headers \u0026 Optional AJE K-Member","description":"\u003cp\u003eSpeed Engineering 25-1166 1 7\/8-inch longtube headers for Gen V GM LT engine swaps into 1979-1993 Fox Body and 1994-2004 Ford Mustangs. Mandrel-bent 304 stainless construction with 3-inch collectors, merge spikes, CNC-machined flanges and included graphite gaskets.\u003c\/p\u003e\u003cp\u003eChoose the headers alone or the manufacturer-matched package with the 1979-2004 AJE K-member, LT engine mounts, spring perches and manual\/power steering-shaft kit. Header fitment is validated around the AJE components; other combinations are unconfirmed.\u003c\/p\u003e\u003cp\u003eEvery header configuration can be upgraded with SMG LT MLS gaskets and\/or SMG 9070C Ceramic Plug Wires. Their ceramic boots resist header heat and melting, and they are the only wires used on SMG in-house header builds.\u003c\/p\u003e","brand":"Speed Engineering","offers":[{"title":"Included Graphite Gaskets","offer_id":54157617824063,"sku":"25-1166","price":389.99,"currency_code":"USD","in_stock":true},{"title":"Add SMG LT MLS Gaskets","offer_id":54157617856831,"sku":"25-1166+SMG-25-1059","price":429.98,"currency_code":"USD","in_stock":true},{"title":"Add SMG 9070C Ceramic Plug Wires","offer_id":54157617889599,"sku":"25-1166+9070C","price":524.99,"currency_code":"USD","in_stock":true},{"title":"Add SMG LT MLS Gaskets + 9070C Wires","offer_id":54157617922367,"sku":"25-1166+SMG-25-1059+9070C","price":564.98,"currency_code":"USD","in_stock":true},{"title":"Headers + AJE K-Member Kit","offer_id":54157704888639,"sku":"25-1166+AJE-K-MEMBER-MUSTANG","price":1059.99,"currency_code":"USD","in_stock":true},{"title":"Headers + AJE K-Member Kit + SMG LT MLS Gaskets","offer_id":54157704921407,"sku":"25-1166+AJE-K-MEMBER-MUSTANG+SMG-25-1059","price":1099.98,"currency_code":"USD","in_stock":true},{"title":"Headers + AJE K-Member Kit + SMG 9070C Ceramic Plug Wires","offer_id":54157704954175,"sku":"25-1166+AJE-K-MEMBER-MUSTANG+9070C","price":1194.99,"currency_code":"USD","in_stock":true},{"title":"Headers + AJE K-Member Kit + SMG LT MLS Gaskets + 9070C Wires","offer_id":54157704986943,"sku":"25-1166+AJE-K-MEMBER-MUSTANG+SMG-25-1059+9070C","price":1234.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/2041\/6831\/files\/25-1166-lt-swap-mustang-headers.jpg?v=1784812119","url":"https:\/\/smgspeed.com\/products\/speed-engineering-1979-2004-mustang-gen-v-lt-swap-1-7-8-longtube-headers","provider":"SMGspeed","version":"1.0","type":"link"}