Silverado & Sierra T56 Swap Bracket (1999-2006)

T56 Transmission Mount Adapter Bracket (2WD Late 2000–2006 GMT800 Chevy Silverado / GMC Sierra | Gen 3/4 LS Swap) Make your T56 bolt in like it belongs there. The Desert Style MFG T56 Transmission Mount Adapter Bracket adapts your T56 to the factory GMT800 transmission mount and crossmember — no fabrication, no guesswork. Designed specifically for GMT800 LS swaps, this bracket lets you run OEM components for a clean, repeatable install. WHAT THIS BRACKET DOES ∙ Bolts directly to your T56 transmission ∙ Adapts the T56 to the factory GMT800 transmission mount ∙ Allows use of the OEM GMT800 crossmember ∙ Maintains proper transmission height and driveline geometry REQUIRED OEM PARTS (NOT INCLUDED) Factory Manual Crossmember: GM Part #15040426 Manual Transmission Mount: GM Part #15820075 Note: These are the factory manual transmission crossmember and mount. 1999–early 2000 trucks used a different crossmember with offset frame pickup points and are NOT compatible. Automatic transmission trucks (4L60E) used a different crossmember and compatibility with those has not been confirmed. Available used from any late 2000–2006 GMT800 donor truck equipped with a manual transmission. WHAT’S INCLUDED ∙ Desert Style MFG T56 Mount Adapter Bracket ∙ All required mounting hardware FITMENT ✔ 2WD Late 2000–2006 Chevy Silverado 1500 / GMC Sierra 1500 ✔ Gen 3 LS (LS1, LS6) ✔ Gen 4 LS (LS2, LS3, L99) ✔ 2004–2007 Gen 1 Cadillac CTS-V T56 (recommended donor) ✔ Proper bellhousing depth required ✔ Requires factory manual transmission crossmember — see part numbers above COMPATIBLE T56 DONOR This bracket is designed and tested around the Gen 1 CTS-V T56 (2004–2007). The CTS-V uses a flanged bolt-on output yoke — not a slip yoke. That is the unit this bracket is built for. The following T56 variants have different tail housings and are NOT confirmed fitments: ✖ F-body Camaro / Firebird T56 ✖ C5 / C6 Corvette T56 ✖ Pontiac GTO T56 ✖ Dodge Viper T56 ✖ T56 Magnum / TR-6060 Not sure which T56 you have? Check your tail housing. If it has a flanged bolt-on yoke, you’re good. If it has a slip yoke, it’s the wrong unit. WILL NOT WORK WITH ✖ 1999–early 2000 GMT800 trucks (different crossmember) ✖ 4L60E automatic crossmember (not confirmed compatible) ✖ 4WD GMT800 trucks ✖ Non-LS engine setups ✖ Incorrect bellhousing depth ✖ F-body, GTO, Corvette, or Viper T56 variants ✖ Non-GMT800 platforms Laser cut. Precision formed. Designed specifically for GMT800 LS swaps. If you’re putting a T56 in your truck, don’t hack it together. Mount it correctly the first time. Stay sideways. Build different. — Desert Style MFG​​​​​​​​​​​​​​​​