[ZacharyDouglas1992]

Well, if your heads are really 110cc, with true flat top pistons you'd be at right about 9 or so including the valve reliefs. So definitely get those measured, you may already be somewhere close to where you want to be, assuming your deck clearance is around .020 with the new crank and stock style pistons. unfortunately the .070 overbore makes for less options when it comes to pistons.

KB202-070 Here's one viable option. I'm sure you are already aware of these but when you plug in those figures at 110cc its like 9.03. Should even be friendly with 87 octane with careful timing and/or 180 or cooler thermostat.