318 exhaust manifolds on a 360

Well that depends...the Grand Cherokee manifold didn't come with a 2 1/4" exit hole, I know because I bought one just to find out (I told you I spent a few hundred dollars searching/researching). I don't know of any newer small block manifold (70s and up) except 340 that had an exit hole that big. Did you verify/check the exit hole on the manifold you show in your ebay hot key?? Or are you saying that it just looks like the ones I sell?? I'll bet $100 it isn't as large as the ones I'm selling??? But you are getting close...I knew you were smarter than you let on earlier.

Treblig

Yes they did. I've worked on them MYSELF. Look at all the links I posted. The Jeep Forum link. They are showing Grand Cherokee manifolds. 2.25" outlet. I've seen a lot of them in person, up close and personal. Look at all of them in the links I posted. It's pretty evident they all have large openings, even though you cannot see the outlets head on. They are large.