Ujoint help

[80chevyK10]

Ok I’m new here, my 80 k10 4x4 longbed with straight 6 250 needs new Ujoint, the old were destroyed when I got it. Width from one side compared to the other is different. Parts stores think I’m nuts and I’m too stubborn to pay a shop. Could it be the driveshaft is different from the original or can I actually find the correct Ujoint somewhere?

 

[PrairieDrifter]

What transmission, transfer case, and axles?

 

[Strick]

Measure the cap size to see if they're 1.063, 1.088 or 1.125. Then measure ujoint body length on both spans. I've got NEAPCO breakdown chart with PN's once measurement is defined.

HS

 

[fast 99]

They do make conversion joints with different OD caps. Doubt they were ever OEM.