hi just have one questionfor those who have used the power enterprise head gasket(87mm) with a block that has been o-ringed . is it safe to o-ring a block and use this head gasket?? the reason im asking is that im having a block oringed and the guy from machine wanted to know if this headgasket already had an o ring of sort already or something. he is worried that if it does this come mess up the o ring in the block or the hg would get messed up. any help ? i called power enterprise and they didnt know what an O - ring meant... i hope my question makes sense

 

maperformance has ran them with o-rings but the shop that is doing my motor didnt think it would work well with o-rings so i just went with a bored out evo 9 head gasket.

 

i just want to make sure this can be done and nothing will get messed up