There's nothing mystical about building a Hemi A-body. Actually in some ways it's easier than doing a 440 A-body. Keep in mind these cars were minimal in equipment & the parts were from other, less expensive vehicles and what wasn't were simple fabricated pieces. Example: the de-clutching fan was taken from a Dodge truck. the seats, as we all know, were from an A100 pick-up/van. An 8 3/4 rear came under almost everything back then so finding a wrecked anything will give you the raw material. The 727 was nothing special except for its reverse valve-body. The converter was the "trick" & is available everywhere now. The Hemi itself? Admittedly that's expensive BUT unlike a wedge engine the exhaust ports exit under (?) the engine as opposed to out the side of the motor making fitting the headers less of a hassle. Why do you think 440 wedge headers are fender-well exit? I could go on, but no one should be intimidated by a build like this as the factory really did do all the R&D for us & that info has been around for literally decades.