School me on big trucks - 89 GMC 6000

[Bagd72Chevy]

I've been looking for a big truck for some time now and found out a friend has an 89 GMC 6000 ex U-Haul truck I could get for an extremely reasonable price. I have not seen it in person yet.

Things I know:

It has a 366 V8, manual trans, its long. Hasn't run in a while, someone said the fuel pump was changed last but they thought it might not have been the right one.

Are these trucks carbureted?
Is it a 5 speed or 5+2 or what??
I see in pics it has an air compressor, does it have air brakes?
Can these trucks be lowered any?
Is the cab different from a pickup?

Ideally I would like to get it running and drive it to my house but I'll tow it if I need to. Not sure if it's height would be too high on my gooseneck. Its not that far from me if I could get the brakes working and just pull it home with my duramax.


My plans:

I have an LBZ Duramax donor with allison and transfer case. I would like to swap it, make it a crewcab, add a ramp bed or roll back and use it to haul my hotrods/C10's. Maybe make it 4wd if I could keep it lower like a newer kodiak/topkick.