Head Differences

[RB32DETT VL]

Hey all, I have an NA VL commodore, and am hoping to do the RB30 twin cam head conversion. Just wondering if anyone knows much about the differences between the RB25DE and T cylinder heads. See, I will eventually go turbo, but if it's possible, it'd be much better to buy the NA 25 head.

[SteveL]

Apart from camshafts, there are no differences between NA and turbo heads....CR change is acheived via different pistons.

[RB32DETT VL]

Thanks man. Means I'll be able to save a few Gs by buying RB25DE import wreck. I'd prolly port the head before fitting it and install new cams anyways. You got any idea how much these heads can flow in NA form, both standard and decent port?