The Allison is typically used on GM HD 2500 and 3500 4x4 trucks with Diesel power.
Transmission Yoke identification procedures:See Measure instructions on Master Transmission Page.
1410 UJ is 4 1/8 wide x 1 3/16 cap diameter
1480 UJ is 4 1/8 wide x 1 3/8 cap diameter
There is an Allison yoke available with a big damper ring available. This is a special order and it runs $245 plus shipping.
Note: Ground hub is diameter of barrel where the seal rides.
Transmission slip yokes are measure from center of U-Joint cap to tip of barrel.