just my 2 cents since I bought one of the first kind you listed there just recently. The last port (closest to the back of the jeep) hit my intake manifold and I was unable to shave off enough of my intake manifold to get it to fit on. The port sits about a centimeter too high and I wasnt comfortable shaving that much out of the manifold... so I ended up having to return it. I upgraded to the 99+ intake manifold, and just for giggles I tried my stock manifold and both had the same problem.
the other issue, which wasn't as severe, was that I literally had to jam it in and it sat REALLY snug against my stock motor mounts. Maybe youd have better luck overall than I did, but i wasted a few hours for nothing, lol
1996 ZJ 4.0 Laredo... you know, the one with the ripped leather seats