I got a great deal on an 88 GMC 2500 4x4 suburban, and now I was wanting some insight on what is available for this truck. I am mostly in toyotas so I'm unfamiliar with the GM stuff. It's specs out as follows: TBI 350 TH400 NP241 10 bolt (7.5) front with manual hubs 14 bolt (9.5) rear semi floating The body is pretty rough, interior very bad, rear passenger door glass is broken, the tailgate style door is trashed and no glass, it runs and drives very well though. Now the engine and tranny I know, but the 241 tranfer case and the two axles I'm real unfamiliar with. Are these worth building up for rock crawling under a toyota? I was always looking for dana 44s with an 8.5" ring but this 10 bolt has a 7.5" ring, so I don't know if it will suffice. Ways to go: These axles under a tojo with 40 inch tires or so if they can handle it. Or... Gut the interior carpet/plastic, use bedliner and replace the rear tailgate and glass and use for a work truck Make this suburban an offroader - but I am not sure what this drivetrain can handle with the overall weight of the truck and horsepower of a v-8. Suggestions, and info about the transfer case and axles please?