I have a 1990 Jeep Grand Wagoneer with Dana 44 axles and a NP261 from my original Chevy Silverado 5.3L pickup truck.Question:  Can you supply a slip yoke that will fit, it has to be a 1310 series ujoint?Answer:  We can supply the yoke you need, order our part number MWTN-2-3-9161X. The spline dia is 1.291, no of teeth 31/32, Centerline to the end is 7.5, hub dia is 1.886, centerline to washer is 1.0 angle is 15 its a series 1310 its full splined yoke used in early GM 4WD trucks. Your cost is $92.00 plus S&H.If you need additional technical help give Scott a call 888-82402012 he can help you.  You can see the other parts that we can supply for the NP261 transfer case on our site.