Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Gasket Installation

THese Gaskets installed very easy. Appear to be holding exhaust gases in after a few hours run time. Couple of nits for these are, the instructions dont tell you which face is out. you have to guess. And, would be nice for them to be a little thicker. However, as noted, they appear to be holding good with standard stainless steel header bolts (3/8inx16). Recommend you all spend a little extra when purchasing these and also get a set of the small head (3/8 inch socket w/ allen head)header bolts with 1 inch shoulder to bolt end. These will make your life so much easier with the header work in general.