Quote
PwrWgnDrvr
On 100-300 models, 10 spline 61-68, 23 spline 69-71.
400 and up are 10 spline, but larger dia.
I reckon that is correct and how Dodge intended for aftermarket.
Problem is,... the books at autozone, O'reilly, napa, advance, 9to9, rock auto, summit, jegs, and several others all say 23 spline on their computers even on 66 etc..
Pleased to know actual Dodge changeover dates, Thanks Terry.