White Box transmission crossmember is part of the most comprehensive line of GEN-3 Hemi Swap components available for the Mopar E-Body. This WB130043 Crossmember adapter plate allows the installation of the popular 8HP90 8-speed automatic transmission when used with the WB130038 Crossmember. No cutting or drilling is necessary; just bolt it in the factory location using the supplied hardware. The modular design allows the use of several different transmission options without the need to buy or fabricate a different Crossmember - simply change to a different adapter plate and the driveline and u-joint alignment have been preset to the corresponding transmission. Use this transmission adapter with a the popular GM style transmission mount for its compact design that allows for better ground clearance than the factory crossmember (Hooker part number 71223029HKR or 71223030HKR - sold separately). Solid 3/16" Steel construction with raw unpainted finish for great value.