Fitment: Compatible with 1978-1988 G-Body,GM-1. This Crossmember fits the GM-1 Transmission Group: Compatible with Turbo Hydra-Matic 200 250 350 TH200 TH250 TH350; compatible with Muncie M-20 M-21 M-22 transmission; compatible with Borg-Warner T-10 AS-3 Super T10 transmission; compatible with Saginaw Powerglide transmission Material: High-quality steel with black powder-coat finish Function: Provides secure mounting, maintaining correct driveline angle and reducing vibration under load Installation: Bolts to factory frame holes with original hardware; no cutting or welding needed Package: 1 x Transmission Crossmember. Includes necessary screws but installation is not included