Doing a 4-speed this winter...

i was over at my dad's this morning and he showed me some 23 spline parts next to the 18 spline. the 18 spline gears have quite a bit more meat on them, they also have a different pitch thats stronger. guess thats why the 18 splines have gear noise and 23's are quiet. if you put the inputs next to each other the 18 splines diameter is way larger all the way down to 4 gear. wish i had my camera with me, you can defiantly see the differences with the parts next to each other.