How far in should the Slip Yoke be....904

OK, thanks....is this 3 1/2 from the very rear edge of the case to the center of the joint on the yoke?

no... 3 1/2 of yoke inside as measured from the very edge, mark the yoke 3 1/2 up from the end that slides in the tranny and make the mark even with the very edge of the case...If you want the Mopar reference guide number and exact wording let me know