I have two turbo diesel scouts (one is a traveler, the longer wheelbase model) and I love them. I am actually right in the middle of getting the traveler on the road and am building it up to do some trips.
The sd33t is an extremely reliable engine. In stock form its not much for power, but with a few modifications it does a TON better. Not only that they get good mileage (25ish on the highway depending on gearing) and are built like a tank. Everything on the truck was built with heavy duty truck parts and I think that is what sets Scouts apart from other suv's from the same era, and even newer ones.
The nice thing about the turbo diesels (they only came in scouts in 1980, which is the last year scouts were made btw) is that they all had the t-19 transmission and dana 300 transfer case, as well as dana 44 axles.
My traveler also has a 33 gallon fuel tank which will be nice for long trips. Also, there has been a lot of weight reduction, which will help. I will have to make a thread of my build up for you guys that are interested.
I suppose I reiterated some of the things that had been stated previously in the thread, but to anyone who is looking to find a turbo diesel scout, if you find one that isnt rusted to all heck (very common, us scout guys get used to it

) you wont be dissappointed.