Valemount B.C. , Canada

trouble is, the Truck is apparently not roadworthy at present. Little option to go elsewhere

What are the specific issues that are making it "not roadworthy"? Like the transfer case, is it leaking or does it have a hole in the side or . . . ? Is the frame rotted out? etc. ?

Does the shop not have the ability to change the universal joints and carrier bearing? You can tell them that I can do this in my garage in about an hour on that driveshaft.

Short on information but I think the transfer case is damaged and so is the driveshaft end - one is cause of the other and both parts now unworkable so no drive. I’m trying to connect with the mechanic for more info.

If all this checks out I don’t mind getting replacement driveshaft, which I will get at a wreckers, but I want to be sure I get the right one.

Ah, okay. Here'* a suggestion: If the driveshaft damaged the transfer case, it is likely at the yoke. If the transfer case damaged the drive shaft it is likely at the yoke. If the rest of the drive shaft is okay, you can get a yoke, install it on this drive shaft assembly, repair the rest, and not have to worry about the length. You can get brand new yokes anywhere.

Good suggestion ,thanks.

I have been offered a rear driveshaft from a Chevy Truck Silverado 1500 4X4, 157.5' WB (Ext Cab). Is this the same driveshaft?

I'm not sure where the cutoff is for when they extend the rear section versus extending the front section based on wheelbase. My suggestion is to not try to piecemeal sections from different wheelbases together unless you can trust that you have really accurate measurements.

I feel like something is getting lost in the translation here, but I think I may have figured it out: FYI the universal joints on a used drive shaft, especially in an area with lots of snow and salt and precipitation, are probably not in great shape. This assembly might have also come off of a vehicle with twice as many miles on it and twice as hard usage the whole time. Odds are good you won't have a way to tell. It would be unfortunate to get a used drive shaft assembly that is perfect for this vehicle, install it, then have it eat a universal joint or carrier bearing in a month and fall out on the ground. My suggestion is that you replace the universal joints and the carrier bearing on a used drive shaft assembly before installing it.

That having been said, why not replace universal joints and the carrier bearing on the one that came with it since you already know that it fits? Sounds like you might need a yoke as well, but those are easy to get and not very expensive, likely less than a junkyard drive shaft assembly.

The shop should be telling you the same thing.

You best take stock of where you are with this. You need to be sure the transfer case is OK AND THE TRANNY. Unless I missed something you are not sure how any of this happened?
I've seen where a vehicle was driven in such a way as to destroy the tranny, transfer case and twist a shaft off.

@carfixer007 and @CathedralCub advice is much appreciated and you have given me some good lines to pursue. Thanks