The time has come to upgrde the original motor in my truck. Theres only around 89,000 miles on the beast so im not doing a complete rebuild, rather just redoing the top end; heads, cam, intake, carb. After pulling the heads I found that thin metal head gaskets were on it. I have both a set of the metal ones and felpro stock 350 replacements(regular gasket style). The felpros are about double the thickness. With the new heads compression should bump up to around 9.5:1 (64cc chambers VS 76cc) so I dont think compression is an issue. What I was wondering was if there was any difference between the gaskets? Is one better than the other? Any input woul be great.