a standard bore head gasket will not fit because the cylinder walls are now bigger in diameter. If you want to take the time to make it fit you can trim the headgasket yourself but thats a lot of work. HKS I believe offers headgaskets but their are specialized companies out their that all they do is headgaskets in different sizes...MLS, AJUSA...go to Jackson Auto Machine website...amongst others. Also try any of the big DSM shops to see what they offer/suggest. Slowboyracing.com, roadraceengineering.com, etc...
