get some cams and a good header, and rock the All motor beast!

If your wanting to go turbo, then youd need to switchthe pistons out for it to be reliable.

if its indeed 13:1, which it pulled like it when we tuned it, there is nothing you can do.

to get your compression to a safe level youd need like a .100 headgaket which is 5 times the stock thickness roughly. what you have to remember is that the head will not be sealed as well since its farther away from the blocks metal surface. so you try running boost on it, your most likely gonna blow the headgasket out.

Plus, even with that thick of a gasket (which would have to be custom made from Cometic) your compression would still be pretty high for a turbo application, esepcailly since you have stock rods and sleeves. if you want to go turbo, youll have to pull the block apart and switch to forged internals with a 9:1 ration, since the block has been decked and milled.