I dont have my KB catalog handy, but I'll dig around a little later. As far as compression, with aluminum heads, I dont like to run anything less then 10:1. More towards 10.5. With careful planning, and good machining, you can creep that up to 11:1 or slightly higher and still run regular (91) unleaded. Go for a flat top design, and deck the block to have the pistons be at 0 deck height. Use the Felpro .039 gasket, and you have a good chamber design, so you can set the compression with the chamber size, and have good resistance to detonation.
