Well i killed the spider gears 2 weeks ago, and i went with a Detroit Tru-Track and a bearing kit. (thanks BBD!!!) but if any one needs any info, Its a Dana 70, and MINE was a 32 spline. and it wasnt that hard, but you will get excellent at taking the 3rd member in and out . and i am very impressed with the Detroit, it is excellent!!! and btw, is there a break in period for it??

 

The only time I ever do a break in is when I put entirely new gears in. If its just a locker or limited slip your using with the gears that were already in it I dont see the need for a break in period. Ive broken in a couple different sets of gears over the years.