My plan is to jrsc my jdm b18c (10.6:1 cr) to 7-8 psi and tune with hondata. I am going to install some arp headstuds and a new headgasket while the motor is out. Would it be wise to go with a thicker head gasket to lower the CR a little? If so, how reliable are these thicker head gaskets, and how much CR can I drop doing this?