10's on $5,000 ?

The kit pistons are all the low compression pistons no matter what year you're working on. I'm not sure when this happened but it's been going on for years. So quality pistons are needed or your limited to about 5500 rpm and about 350 - 400 hp.

http://store.440source.com/Platinum-Series-Pistons-4350-4-FT/productinfo/4000/