Who has a large selection of head gaskets for SBC I want to source two different thicknesses. .032 and .028 with as close to a 4.04 bore as possible.

Remember you have a chamfer on the top of the bore and Cometeic will make the gasket bore any size and thicjness as you will pay for it as well and if your block was plate honed you may want to stay with the same gasket as we have found it makes a differance form gasket to gasket on the 010 blocks.

If it was not plate honed it really doesn't matter at this point.