As much as I hate to admit it, I like Doc's ideas here.
My focus would be more on smog choked cars of the '70's, (ie: HC '79 Magnum) but I think a modern Hemi anything in an early A would be suicidal, but your last moments sure would be fun!
As for the OP's RR, I really like that. Some of the body swaps I've seen look funky, but this one looks good!