Well, the NorthWind was a little shorter, over all, but, the flat carb pad tips the front of the carb up some ...... so when the small wedge plate was installed, it was a little taller than the RPM, but not much, really, not much at all. But, you must have the custom style air cleaner base that's on that 78' T/A, or i don't think it's gonna fit at all. It is tight, but, it's in there. I hope my pics helped ...... i can't speak for the other Pontiacs hood height, i really have no idea. I'm a 2nd Gen F-Body guy, sorry.
