Ok so I dropped my set of L32 heads off at a local machine shop today to get a mild p&p (intake runners gasket matched), and also inquired about having my IC machined LIM runners gasket matched as well.. Well, long story short they said it wouldn't be worth it as the runners of the LIM are actually suppose to be a little smaller than the gasket and that I wouldn't notice any gain from it even with the heads being ported. How factual is this? It is ssneilmnop's LIM btw.. Bought it along with his IC.