OK heres the DL !!! LS VTEC Good Power NA Lower compression with forged internals and yoll have a nice runig motor !! BUT !!! LS TURBO is way more potent !! look at cheesefrog runing a straight LS Setup and pumping like 400ponies !! If i had an LS id go LS Turbo before LS VTEC but i like that gay ass VTEC kick over sound !! The LS VTEC is a powerful combo but weak fortatude wise ! Evans (roadtaoads) GSR block is ok but id rather have the beefyness of a LS block supporting my power. If you like living on the edge you can go B20 VTEC Turbo ! but thats very unstable.

Ive already made a list in the Forcd induction site about this stuff. Go check it out.

I will say this.. when I assymbled evans motor I noticed some differences in that from the LS block and frankly I think the LS is much more ballsy !! So in IMHO id do a Straight LS Turbo for maximum power and If you want mild and wild fun power Go LS VTEC Turbo Its really dependent on your flowage !! and knowledge.