2 ms·Just out of curiosity, what makes the 996 and 997 models a different car from 993 and before?by dsrguru 15y agoJust out of curiosity, what makes the 996 and 997 models a different car from 993 and before?kirpekar 15y agoAquawazoox 15y agoSee the wikipedia[1] page. Basically, the 996 was a complete overhaul, new chassis, new engine (water cooled). [1]: http://en.wikipedia.org/wiki/Porsche_911 http://en.wikipedia.org/wiki/Porsche_911