It's been done in a few 510's that I've seen one motor was from a Mustang SVO (seen this and drove it in Denver about 10 years ago) and the other was a tuned Merkur XR4Ti motor (saw it in El Paseo, Texas about he same time) - The motor is about the same size as a KA24 so it may drop into a 1200 with some finesse, I'd ask the L-Series 1200 owners which crossmember they used then go from there (is the ford 2.3 rear or front sump?)