case 580ck forklift

I have an old case 580 constuction king with a harlo forklift mast. I am having trouble finding the correct manual shuttle input gear-shaft assembly. The case parts book shows a part # of A37617. The teeth on the gear are the same ; the bearing land & snap ring groove are the same. The gear assembly is 1 3/8" longer than the A37617, the is necked down to 1 9/16" and the shaft that runs from the clutch disc to the direction reverser input shaft is a 1 1/8" 17 spline shaft. Also the 2 seals...

case 580ck forklift

case 580ck forklift