man i seen something the other night on a GM high performance web site and they had an LS2 making about 505HP on the Dyno NA. then they did the L92 head swap with the L76 intake no other mods or anything and it made about 546HP so you are looking at a 40HP gain by just swapping some parts that are available for about 1600.00... imagine with a little P&P and flowing and tuning it to the new flow numbers. that is pretty cheap for having a great platform to work with.