4.7 V8 swap?

Both the 4.7 and 5.7 are a pain to get in to an A-body, but as already noted the Hemi at least has some support out there in the aftermarket. Having watched my buddy go through a 5.7 EFI crate swap in his 67 Barracuda, I'm no more convinced of doing a 5.7 over a 4.7 at this point. I'd be interested to see how well a 4.7 would fit in an A-body. I think it would be OK, I can't imagine that even with the tall SOHC cam covers it would be as tall as a big block, and we all know those fit well enough. Again, partly due to aftermarket and factory parts/support.

Would love some day to get an +08 4.7L and a medium sized turbo under the hood of my Valiant. Light weight, good on gas without boost, and big block power with boost.

Clair