Well, to be accurate, they ran at about 100 BHP max, but you're right - they made 1500 at full boost and that's where they set the speed record in the US in 1975 after they were retired from racing.
this video has depressed me, for knowing that this car will never be ran the way its meant to be again. I want to see them beating the crap out of the car like it should, not prance around the track.