With FA20s making more power on boost than is really useable on the street, what's the point? Beyond impressing people in the parking lot, you're pretty much left with a car that handles worse, sounds (and revs) like a pickup truck and gauged that don't work.
Maybe I just don't get it, but there's just no real good reason to swap out a perfectly good, modern, fairly amazing engine (FA20) for a 50 year old truck engine. Yes yes I know, it's the aluminum corvette version, but have you ever driven a corvette? They're awful cars, in large part due lazy-feeling pushrod dinosaur under the hood

. That's just now what these cars are all about...