What do you think of my build? 318/390

Diamond has a -16.7cc Piston. which will net you 9.5:1

Boy, that would be nice. I'll go to the website and check them out!!! What gasket thickness would be required for 9.5:1 CR with those pistons?? Thanks,

PS - I'm far from an expert when it comes to the CR and volumetric efficiency and stuff like that. I know just enough to get in trouble!!LOL Does the -16.7cc piston mean that the piston is dished so that it has 16.7 cc below the deck surface??
treblig