A little off topic. GM actually used the 3.03 3 speed in some of their big block cars. Back in the 60's GM had internal rules on what body styles could run what engine and transmission choices so there wouldn't be completion between models. Some Pontiac, Oldsmobile and Buick weren't allowed to use 4 speeds behind the big blocks. They were allowed to use a 3 speed but their 3 speed manuals weren't strong enough. So GM bought the 3.03 Toploader 3 speed for them.