Cant remember the exact figures but you get something like 7.2:1 CR with a pinto and yb rods and pistons. You can machine about 1mm off the head and get to about 8.1:1 or you can machine the pistions about 1mm and the block is decked about 1mm to get to 8.5 or more.
Dont forget you need the YB oil spray/pump or the rods need a groove