Driving instructor Bob Reed had a stroker A-body without cage with a little less hp/tq than the Red Brick 68 Valiant (~550/550)
The Red Brick has 519hp/506 ft lbs, but who's counting?
Regardless of the actual power numbers, I'm sure that thing absolutely flies
The Brick does fly (160+ mph) but it is brutal to ride in. If you want a modern car buy a modern car. Hard to beat 50 years of R&D by a huge engineering staff.
For me, the Brick's ride wasn't so bad, it was the heat and noise that wss the problem. Earplugs took care of the noise, but the heat was brutal. According to the two guys who have owned it since I did, Dynamat and carpet helped a lot with both heat and noise. I should have put that stuff in. I might have kept it.