[jermil01]

Sounds like you got a t-case from a pickup truck. The tail shaft on a Bronco is much shorter. You can see the difference in this pic. You'll also need the tailshaft housing from the Bronco. Or you could just swap them of the one that is already in your rig.

 

[jermil01]

You're going to want to do a rebuild on that case before installing it, so why not tear it down and use the tailshaft from your Bronco so you don't have to screw around with a slip yoke.