My son has a 36 olds and the front of the frame bumps out for the coil spring pockets You can do a complete Jag brake rebuild cheaper that buying a sub frame kit. I would trim the olds frame bump outs then weld in 1/4 flat plate. then install the Jag I haven't been out with a tape to do a lot of measurements but it looks like an easier job than a front sub frame kit or swap. we have 4 jag suspensions in the shop for our projects. We buy fronts or rears for $ 100 to $ 125 we pull. .There are a lot of posts on the HAMB forums about Jag swaps. do a search for jaguar suspension swaps.