Depends. If this is a big ol' class A it likely will be a heavy truck engine with the high mount water pump and oddball heads with the water pump mounted to the heads. If it's the smaller stuff like the "van body nose" 1 ton stuff, it will likely be same as a 1/2/ 3/4 T pickup, in other words a toned down "car engine"
Some of them had oddball torqueflites with the yoke on the TF and the slip spline part of the driveshaft
