360 Piston Depth

Thats what I figured, I found some kieth black pistons that are a little more than .100" taller than the ones I got for around $260. Those will bring me up to 10:1 with a .04 gasket, 5 cc piston dish and a 64 cc head.
Careful hoss..... those KB107's + pins weigh about 80 grams less per unit than the stock ones. So you would be making a weight change that needs a crank re-balance. I personally would do that to get better CR (which you can always adjust donw with thicker heads gaskets) and lower weight in the rotating assembly, but be sure you want to spend the extra $$.

If not, the H405CP's are an option; IIRC they weight the same as the stock units; you have to download the FME catalog to verify the weight. Using the .028" thick 1121G head gaskets would make up for a bit of CR loss; you would end up with about 9.25 SCR with that combo and 64 cc heads.