I ordered Mopar performance head gaskets part number P4120093. Advertised as having a bore of 4.06 and compressed thickness of 0.04 - what I got are Fel pro 8553PT gaskets in a Mopar box! These have a bore closer to 4.2 and a compressed thickness of about 0.05 - no better than what came in my full gasket set. I will be sending them back. Just wanted to make sure nobody else made the same mistake.