When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I would go LS2 and spend the money on the heads. Never cheap out on a set of heads. Slap a ported FAST 92 on it and even with a 224 it would make 450rwhp. Tune, tune, tune.