Stainless Works Long Tube Header Kit (FOXTWR188C) - 1979-93 Mustang GT Small Block Twisted Wedge R

Push your Foxbody Mustang’s performance to new heights with the Stainless Works Long Tube Header Kit for Twisted Wedge R–style cylinder heads. These headers are designed to deliver maximum exhaust flow, horsepower gains, and a deep, aggressive tone while maintaining an exact fit for 9.5” deck small block applications. Perfect for street or drag builds demanding uncompromising performance and fitment.

Crafted from high-quality 304 stainless steel, this system features your choice of 1-7/8” or 2” primaries with 3.5” merge collectors to handle serious power. Engineered for heads featuring the 2-o’clock, 8-o’clock bolt pattern, the kit fits top performance cylinder heads from Trick Flow, Brodix, Ford SVO, and Edelbrock. It’s designed for smooth installation with TH400 transmissions and works flawlessly with UPR or AJE K-members and crossmembers.

Features

• Premium 304 stainless steel construction for strength and corrosion resistance
• Optimized for Trick Flow Twisted Wedge R and similar cylinder heads
• Available with 1-7/8” or 2” primaries and 3.5” merge collectors
• Compatible with TH400 automatic transmission setups
• Works seamlessly with UPR or AJE K-members and trans-crossmembers

Fitment

- 1979 Ford Mustang GT (Small Block Twisted Wedge R)
- 1980 Ford Mustang GT (Small Block Twisted Wedge R)
- 1981 Ford Mustang GT (Small Block Twisted Wedge R)
- 1982 Ford Mustang GT (Small Block Twisted Wedge R)
- 1983 Ford Mustang GT (Small Block Twisted Wedge R)
- 1984 Ford Mustang GT (Small Block Twisted Wedge R)
- 1985 Ford Mustang GT (Small Block Twisted Wedge R)
- 1986 Ford Mustang GT (Small Block Twisted Wedge R)
- 1987 Ford Mustang GT (Small Block Twisted Wedge R)
- 1988 Ford Mustang GT (Small Block Twisted Wedge R)
- 1989 Ford Mustang GT (Small Block Twisted Wedge R)
- 1990 Ford Mustang GT (Small Block Twisted Wedge R)
- 1991 Ford Mustang GT (Small Block Twisted Wedge R)
- 1992 Ford Mustang GT (Small Block Twisted Wedge R)
- 1993 Ford Mustang GT (Small Block Twisted Wedge R)

Additional Fitment Notes:

- Fits 9.5” tall deck cylinder heads including: Trick Flow Twisted Wedge R, SVO 351 “N”, Brodix Track1X“N”, and Edelbrock Victor II
- Designed for 2-o’clock, 8-o’clock bolt pattern heads
- Compatible with TH400 automatic transmission
- Works with UPR or AJE K-members and transmission crossmembers
- Note: Not compatible with QA1 K-member

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