Whos running over 700whp on an 8.75?

I ran a 742 with a spool and 35 spline axles 4.88 gear and 4.56 gears. 71 Dart ran consistent 6.04-6.10 1/8. For many years. SS springs with snubber. BB. 29.5 W Slick. Don’t know what the HP was.