Posi needed!! Please help

dartkory said
Do the amount of splines matter at all? Here is the unit, should it be able to go into my 742 case with the stock axels?
http://item.mobileweb.ebay.com/viewitem?itemId=221200572311&cmd=VIDESC

Yeah spline count matters. Stock is 30 spline. The one your looking at on E-bay is correct. If I'm not mistaken Dr. Diff sells them for the same price and you actually get a warranty you can count on. Been taken to the cleaners too many times on E-bay