Welcome to CHR, James! It depends on what you're wanting with your engine. Since you're boring it 0.030" are you planning on leaving everything close to original, or pulling out the stops and building for performance? Like Tom says, if you're just wanting to tweak it a bit then he's given you some ideas. If you want more then some of the guys here can start talking about your "stack" to get to the right squish, what pistons work well, and your static compression to make the cam selection that you'll want. One of the biggest questions is what heads you plan to run, as that will affect the maximum SCR you'll want for running pump gas.