???s for pontiac transplant

[60gmc]

Hi everyone,
I am installing a pontiac 350 and turbo 350 trans in my 60 gmc and I was wandering which trucks would have the correct driveline yolk to fit a turbo 350 trans and my original driveline. the original auto trans and the turbo 350 are the same length, the truck is a short fleetside that had the 305 v6. I am not sure what the original trans is so if anyone has any thoughts on what it might be lets hear it, the idicator pattern on the colum is
N, 1-4, 1-3, 1-2, space, R

thanks,