So after some fiddling on a test shell i got how to FC subframe an FB down to near science. I hope to highlight the process a bit in this thread here. Im progess a touch faster than i expected, but rallycross season is soon. And if these ideas work great, ill probably translate them to the actual rally car.
Essentially the stock FB subframe mounting bolts are the key. The front bolts are retained, whereas the rear bolts need to be removed. Rather simple with a grinder and a cold chisel. The front bolts essentially locate your FC subframe.
The subframe itself has two stubs you have to grind off.
I then mount the subframe up via the front bolts, then mark and drill for the rear. This requires the use of a 6 inch bolt. I used grade 8 bolts. I also used some metal stock to support the top of the bolt. Its a rally car so i wanted overkill.
