Big Block Conversion, do it again?

It does look like my friend's Road Race suspension, except the springs look too light and it's missing the NASCAR cage. My friend's is not even streetable, nor was it intended to be. The RMS rear is lighter for sure, but I'm not a fan of 4 link rears on the street. That build would be way out of my price range and experience. I would normally not comment, except for the notion that this would be the only way to "use" 500 HP in an A body.