Oh trust me, I have lots of interest in the Predator stuff and if and when the time comes to buy better heads then what i have it will be Predator heads. My junk has been sidelined for many years because of having a very busy job and having two kids to raise. I look at it like this, buy the Predator heads right from the start. If i only want to run in the 9s, mild porting and mild camshaft. The day i want to step it up, there's lots of room for improvement. By the way, good luck with yours.