That's incredible. I am swapping a 7A head into my 4AF in a little while.. probably a few months, reason is because it has better intake porting.. allows for better flow.. I think the next car I go with I'll put a VVTI engine in it and make a joke of V-TEC, sort of like this guy is doin!
That thing is impressive.. and he would smoke your avg. supra.. About the only supra I'd imagine that could hold on to a 500hp corolla would be the top supra's in the country, (
http://www.t04r.com/) I'm talking about the ones with just about 1100ft/lb.