It would be pretty easy to put a 426 hemi in a '62 or later Imperial using the version of the MP hemi block with the B/RB style mount ears! One would use the RB mounts, the oil pan, transmission, water pump housing where necessary (pre 70), etc. Modify a hemi oil pickup. For a '61 or earlier, there would be a problem with the crank offset in back mating with the trans, right? But that could be solved. I have no experience with a 392 so don't know about the mounts and all that. Bill Parker, South Central Indiana '62 Plymouth Max Wedge; '64 Dart Convertible (Kathi's car); '65 Imperial; '65 Barracuda \6 (Kathi's other car); '68 Hemi Roadrunner; '68 Barracuda Fastback 383-S; '69 Barracuda Fastback now 360 (20 y.o. son's car); '72 Cuda 340