U-Joints, which part number?
 

There's about a thousand (give or take, haha) listed and I'm not sure which I need.

79 1/2 ton LWB, nothing special but it's a Big 10, assuming that makes no difference.

It's got a TH350 and a 12 bolt, one piece driveshaft.

Is it #269 from Moog/Precision (for non-greasable)? That one states 1-1/16" OD..