Gen III Hemi Swap Transmission Crossmember Hoop for 1966-1970 B-Body Mopar - Use with NAG1 or 8HP70 Transmission & Crossmember BHS532;Engineered Transmission Mount System Works together with Hooker Blackheart Engine Mounting Brackets, Transmission Crossmember, Long Tube Headers, and Exhaust Systems; Offers an Easy Trouble Free Gen III Hemi Engine Swap in the 1966-1970 Mopar B-Body; Provides the Necessary Clearance Through the Upper Transmission Crossmember for the Drive Shaft Coupler and Speed Sensor Ring when Installing the NAG1 or 8HP70 Transmission ; 1/2” Steel Upper Hoop Provides the Necessary Structural Integrity When Used in Combination with the BHS532 transmission Crossmember (no Welding Required); No Cutting of the Transmission Tunnel Required; Accommodates Popular NAG1 or 8HP70 Transmission (Requires Transmission Specific Adaptor plate); Uses the Factory Mounting Holes – For Easy Installation; Black Coated for Great Looks and Durability; Heavy Duty 3/16” and 1/2” Steel Construction for Strength and Durability; Includes Mounting Bolts & Instructions;