I had pressure in the cooling system after sitting for 2 days so there is definantly compression getting into the cooling system.

What do you mean? You popped the rad cap and had some fluid/air come out? If so, that is not an indication of a crack between the combustion chamber and the cooling system. In fact, that is relatively normal.

Unless you have seen cracks before, you may not notice them. They can be very small and hard to see. Mostly look between the valves and at the other thin areas. In general, 3.2's don't have a reputation for cracking, so there is no "normal" place for it to occur.

I suggest taking the heads to a shop and having them inspected and/or fixed.

Good Luck,
Michael