The welds on that OBX manifold look like complete ass. You wouldn't want to blow the welds off the intake manifold. Sorry I couldn't help it. :rofl:
The skunk2 is nice and we have some vendors here on HAN that can give you a good price on it.
I have an LS and wouldn't waste my time upgrading the intake manifold unless god sent me the gift of an upper rpm powerband.