Let me start by saying I have an '01 S/C Frontier with the vg33e. I have been told by a Nissan tuner that the blocks are essentially the same. What I want to know is ...is it possible to bolt the vg30de heads on my vg33e block. And if so, will it work properly with the correct belts. Has anyone tried this before? Do you think there would be any gains in performance? I would think the heads would flow better and would yeild better performance with my eaton S/C.