you can port and polish the intake for not too much at a decent shop...get it gasket matched... Eventually, it would be great to get the heads matched as well... Definately upgrade the injectors and chip (and fuel pump) if your $$ permits... Easy to do with everything out of the way...
it seems like most people with hot airs tend to go with the 42.5's. i was told that anything higher could flood the engine on our models by poston. Turbo tweak makes a good chip!