Will the HD tranny that is in the 97-03 GTP's bolt up to the 3.1? the reason i ask, is i believe my tranny is starting to slip...and its started one week after i put my custom exhaust on...(imagine that) if im dropping a tranny in this car, i would just assume it'd be the HD version...

BTW, my car is a 2003 Grand prix SE w/ 3.1 v6

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'03 Grand Prix SE - U-Bend Delete, GT exhaust, Cherry Bomb...Soon to be De-badged, with a GT rear bumper (pictures to come)
'97 Grand Am - 2.4 sold with 217,xxx miles on it
'00 Grand Prix SE - Wrecked

Such a shame the Pontiac brand is no more