I am really having a tough time finding the differences between the B16 head and the B18C head. I've searched for 3 days now and I can't find what the differences are. Maybe I'm a shitty searcher! I am of the mind that if hondaswap doesn't have it, then I most likely don't need it! I haven't been as throe on other sites. I know the cams are different but I am more interested in the physical head differences, if any (besides the shitty port job the type R has), and if the valves/valve guides are different between the heads. I know the Type R has different intake valves but the exhaust valves are the same as the GSR. Second is the Hondata Intake gasket or similar worth the 65 bucks? Also in the race version where you have to re route coolant lines is the corner of the head that is now blocked off noticeably effected as heat dissipation goes? Third are the ARP head stud bolts worth while? I know I have read that Hondas are just fine with the stock head bolts when going boost. I almost always anti-seize bolts that I remove before I reinstalled them but I am thinking that I shouldn't when I reinstall the head studs. Any positive input is appreciated.