Upgrade your 1964-1967 BOP A-body Convertible with the SST Crossmember (XMG-21180) designed specifically for TREMEC T56 Magnum transmissions. Engineered in-house by Silver Sport Transmissions’ engineering department, this crossmember is built to be as strong as, or stronger than OE, ensuring durability and reliability for your classic vehicle. Made from box-welded steel, it delivers exceptional strength and precision, providing a perfect fit for models like the Cutlass, Skylark, GS, 442, GTO, Tempest, and LeMans. Whether you're restoring your ride or upgrading its performance, this crossmember is easy to instal and designed for maximum clearance. Trust SST for high-quality, performance-driven components designed to meet the demands of classic car enthusiasts.