Easy Bolt-In  Kit for your 6R80, 10R80 or MT82 Swap! (’65 - '70 Mustang)Stifflers kit comes with all you need to install a 6R80, 10R80 or MT82 transmission in any 65-70...

'65 - '70 Mustang Custom Transmission Install Kit* (*Does NOT include transmission mount. The ’65-‘70 OEM rubber transmission mount will not work with this crossmember kit) Custom...

Stifflers' Driveshaft Safety Loop Engineered to exceed NHRA regulations. This one of a kind driveshaft safety loop will save you and your investment from the destructive effects of a broken...

Direct replacement for 1979 - 1981 Foxbody Mustang! This Stifflers crossmember is designed to fit the narrow (2 ¾") mounting bracket of the 79-81 Foxbody Mustangs and  requires No...

Upgrading to a C4, Power Glide, TH-350, or Top Loader transmission?  You need this Stifflers Crossmember! Here's it is, a direct fit for upgrading your Fox to a C4, Power Glide*,TH-350*, or Top...

Works with more applications...T-5, AOD, AODE, 4R70W, G101A, GF5R, TKO, TKX, TR-3550, C6 & 4L60E**! Stifflers unique single tube design adds stiffness and strength far beyond that of the OEM...

"The" Crossmember for your '94-'98 Mustang Conversion! Direct bolt-in Upgrade for a T-45 & TR-3650 Swap Stifflers unique single tube design adds stiffness and strength far beyond that of...

Your answer for Converting a '94-'98 to T-56 (all), T-45*(Cobra Spec) & TH-400** A direct fit for upgrading to a T-56(including Magnum & XL), T-45*(Cobra Spec) or TH-400**...

1996-1998 COBRA - For T-56 (All), *Cobra Spec T-45 & **TH-400 Transmissions This Stifflers crossmember is specifically designed to be used with the 96-98 Cobra "bolt-on" style crossmember...

"The" Crossmember for your 1994 - 1998 Conversion - Direct bolt-in  for your C4, PowerGlide*, TH-350* & Top Loader Swap! Stifflers unique single tube design adds stiffness and strength far...

The Adjustable Crossmember for your 1999 - 2004 Mustang/Cobra has Arrived! The adjustable design of this Stifflers crossmember works with most any transmission application in your 99-04 Mustang or...

"The" Crossmember for your Transmission Upgrade 1949 - 1979 2wd F-1/F-100/F-150 Trucks (For AOD, AODE, 4R70W, c4, C6, T-5, T-45, T-56, TKO, 3550, 3560, TH350, TH400, Powerglide & More!) (*Does...