Sean, I dont know where you have been looking, but I just looked in a Jeg's catalog and found three..you're looking for something along the lines of a .215 or a little bigger dome. KB hypers, #207...these will give you about 10/1, OK for pump gas. Speed Pro, LF2465, they yield 10.7 w/ 107cc, so with your larger chambers, you would be at 9.5 to 10...Speed Pro hypers, H693CP, 10.3 with 107cc, so about the same as the other Speed Pro's...there are more. You can run 10/1 without problems as long as you run the highest octane you can get...dont use 87, that's all. Your carb and gearing look good, but those headers area little big for the rest of the combo...1 3/4 would give you more torque down low where you need it. Also, what is your deck hgt?? That will have quite an effect on your c/r, much more than the head gasket. John