Really, I read about all the issues with putting a Gen III Hemi in an A-body and wonder why people do it....seems like a total PITA just to say "yeah, It's got a Hemi" ..........
To me, IMO, a 4.7 swap into anything vintage seems like more of a PITA than it could possibly be worth. They seem so limited and unsupported by the aftermarket. But, if that is what one has his heart set on, I say figure it out and do it. I enjoy seeing inovation and desire conquer naysayers.
The new hemi has vastly more performance potential than any 4.7. Yea it may cost more than a 360-408 build & swap. But there are a ton of those. Maybe a few hundred 3rd gen Hemi A-bodies. So the 5.7-6.1's get the nod for uniqueness and cool factor. To me at least.
8) When mine is done, I'll be proud to say, " Yea, it's got a Hemi in it."