I am building a .055 over 440 with BME alum. rods and BME flat top pistons. The pistons are .025 in the hole and the gakets are .040 Cometics for a 4.380 bore. This will give me .065 piston to head clearance for the alum. rods. The pistons have valve releifs, maybe 4cc's? The heads are 78cc's. This is only about 10.6 comp. Thats not going to cut it. I would like at least 12.0. This is going to be a NOS engine with a 350hp Fogger. I think I need to mill the heads to about 65cc's? How much do I need to get cut off the int. side and the gasket side?