man, i sure am glad i got my qustion answered, i think? i guess i should change my name from nonothing to "don't know sh!!t". but i think i get the gist of both sides. if your on top of your tune, compression can be delt with, if not and fuel quality is an issue that drop it a bit. as far as deck hight, i've found conflict in what the same person has said in post that are several months appart. but i'll see were mine is at next week when it comes apart. i'm still looking for a builder, there aren't many pontiac builder around the gulf coast as far as i have found. i guess i'll start looking more up north , but shipping will take away from goodies. but it is what it is. if anyone has suggestion on builders that are some what close to lowere alabama, that would be helpful. thank for your time and carry on.