Thanks guys for the replies! This weekend I will see if I can take some volume measurements of the manifolds I have so we can compare notes. Thanks again.
Here are a couple of pics of a CAT version, passenger side, 3.0L exhaust manifold to match the one Potenziato posted earlier. I can't use just one so either I find a driver's side, buy it, to make a pair out of it. Or I may be willing to let this one go for $100.00 if someone else needs it. Either way it's in great condition. I already have a good pair on my Verde and I was just intending to have a spare pair as a back up. These 3.0L manifolds aint easy to find.