balls. i completely forgot about higher CR. The GE pistons aren't dished out like the GTE pistons. The rods and crank are the same. Oil squirters are slightly different, however it can be drilled out to be similar to the one in the GTE.

I don't know what it is that makes ppl say NA-Ts are weaker. Whatever it is, it still makes plenty of power. Check out some of the bolt on setups on supraforums. They are still making some serious power.