Shouldn't be any real difference unless the engines are different, are they both 2.8L engines or 3.1L ?
If he's trying to put a 3.1L intake on a 2.8L engine, or vice versa, it won't work. He'll have to use the intake that came with that engine. Along with the wiring harness from the Corsica and the ECU (computer). Otherwise you folks are headed for some big headaches.