I have a cosmo 13b with a two piece racing beat intake manifold with a weber 45dcoe on top. My questions is, is this the same top piece that they use for the 6 port engines to put a weber on? For example, could I take the top manifold off of mine and put it onto a 6 port or t2 engine?

 

the upper manifold will bolt-on to the 6-port's stock lower manifold. The 4port 13-B's lower intake has a different bolt pattern.

 

Wow, that's a big help wacky. Maybe I'll just get a 6port out of a junkyard and hook it up to my car.