440 Source has the stroker kit listed. I want 10.5 comp pistons with a 78cc head. All they list is 9.71 comp for the 78cc head. Is there anyone that makes this stroker kit with 10.5 comp pistons for 78cc head ??
You might not be able to buy exactly what you want from 440Source. If not then look for a stroker kit from a different supplier. 440Source uses ICON pistons so you might have to find a kit made with Diamond, JE, SRP, Wiseco, etc. pistons. There are lots and lots of choices out there.
Don't use steel shim gaskets with aluminum heads but you can use Cometic gaskets. Cometic gaskets are available in lots of bore sizes and gasket thickness. Look at their website or catalog.
