here's a direct link to the "group a" diff mount. these guys that make them are very active in the merkur community and are THE authority on merkur suspensions. i have one of these mounts and their poly beam bushings. my car no longer tries to swap ends when i hit the brakes. one of these will be going in the cossie sometime too.
http://www.mc2racing.com/products/xr...507/index.html