Alright so for my 2003 Monte SS i got a parts list from my friend who works at a dealer. Now on it for the transmission it says i have a M15 transmission "Enhanced W/ OD" now i know what the OD stands for but what in the hellllll does the Enhanced stand for? I dont know if it means i have the hardened 4th gear clutch shaft or if GM just put it there to make it sound better. Does anyone know what the "Enhanced" means? Ive tried to look it up online and noone hits on the web so ive decided to ask here