Hmmm... How 'bout a 2.2/2.5 turbo in an early A?

My son has a 2.2 turbo Shadow with a full race set up fully caged kinda like a pro street dynoed at just under 450hp at 18lbs. boost and runs mid 11's he is going to turn the wick up to 25lbs. and see what it do. Car weig's about 2800 lbs. not far off from an A Body so the little mill can pull can pull it. I have seen them rwd bolted to a 904 but as others have said SRT 4 16v.dohc would be the way to go he has friends making 600hp with this motor. Do It... dare to be different!!!