[Short 3/4]

Sorry, misunderstood the question, disregard my first post.
The factory assembly manual (available from all the usual vendors) has good info on correct exaust, including 4x4 specific differences. I was surprised for instance to find that mine ending before the rear axle was factory correct. Lots of other good info in that book that you will find very helpful.
That's a very nice looking (and rare) truck. Glad you are giving it the factory restoration it deserves.
Lots of great info on this site (they have helped me a lot). Looking forward to seeing how your project progresses.
Tom