i would have to agree with chris.you could probably reach that horsepower with a 10 degree wedge head.big big motor could get away with less but you still would have to run a cam close to a one inch lift.i don`t care how much you can say money not being brought into the equation,i don`t know of anybody on here that wants to change valvesprings every 4 to 5 passeslike a prostock truck had to.you`re not going to slap on a set of indy heads and go 8`s in a 3000 lb.with ease either.to many of us have tried it with way better stuff than that.