The heads are as good as you can get on a budget.Good for up to 6-700 horse and i will stand behind them all the way.I sell them and work with the guys form procomp very close.We are working on a spred port small block head that will change what we all think of big block vs small block in a mopar.If you could build a small block that can make 6-700 hp would you over using a big block.I think its why nobody builds that many small block cars because of the heads.We are fixing that as we speak,Just look for one bad azz sb head that will change the small block as we know it.And make that power adder motor pull even if not ahead of the FORDS AND CHEVYS in the usa.I will have something by the nats if not before