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.