well i cant say from experiance that it works out ok,but i have talked to a few well known machine shops that have done several of them and none of them have had any problems w the ones they did so iam hoping it is a good choice.lol.iam waiting to get my 107 cyl,cp pistons and heads back from big boyz.cant wait to get it back together and hear it run.is it spring yet?lol.