I have run them wright out of the box and not ported to fully ported on small blocks with the heads flowing 300 on intake runners. I have a nice one port matched to 1206 gaskets and some flange work done, its for sell if interrested. We made 672hp (406) on the dyno with it. The one i have is the 1 in taller.
IMO i think Wilson is a little over priced. They do have some nice stuff though.