you can put those motors in 1200's in aus BUT it will have to be engineered as a 1 off! same as a model A or T ford as they only came
out with 4's and the cost is big $$$ to do. A bloke years ago put a merlin 12 banger in a 55 chevy that i believe to be engineerd in vic but I'm not positive .
http://www.youtube.com/watch?v=SIj2GVfua84