GForce Crossmembers - FE-100
Frame Extension - Bolt-On - Steel - Black Powder Coat - GM G-Body 1978-83 - Each
GM G-Body Platform, Frame Extension Kit. Fits years 1978-1983 when driver side crossmember mount holes are 14" in. forward on frame and Not straight across from other side. This kit corrects this for TH400, 4L80, T56Transmissions.