'72 Chevy K20 - Big Red

[smsag04]

Well, I finally get a chance to post on here. I've done a lot of research on here while I was looking for my project truck. I found this truck on Ebay and just got it home today. The previous owner didn't know much about it other than that it's a '72 K20 SWB. I think that my first adventure will be figuring out exactly what I have. It has definately had some prior modification. Now for the Good, the Bad, and the Unknown.

The Good:
-4WD
-Short wheel base
-Transmission shifts well
-Body is pretty clean
-Motor runs good
-12 bolt rear end
-10 bolt front end
-engine has an Edelbrock intake manifold and Quadrajet carb
-Power steering and brakes

The Bad:
-Super Swampers, had lots of fun driving it home in the rain
-Shackle lift. It's too flimsy and causes swaying over 60 mph. It's coming off till I can afford new springs.
-Rust.

The Unknown
-The VIN number. The number in the glove box doesn't match the title. The tag on the door jamb is missing. I need to find the one on the frame, hopefully that one will match the title. The one on the glove box is for a 1/2 ton 2WD. The one on the title is for a 3/4 ton 2WD. The truck is definately a 3/4 ton 4WD. My guess is a cab swap at least.
-What engine I have. The PO told me that it was a 350, but I found an emission sticker on the front wheel well that says 402. I'll have to check the block marking and find out.
-The transfer case. I haven't tried to shift it yet. Can anyone tell me the shift pattern for the transfer case?
-The gears. I'm not sure what they are, guessing 4.10's.

The Pictures:

As it got to the house


The engine


A 402?


Front end


Rear end


Bad shackle lift. Notice the horrible angle of the u-joint


Transfer case


The current gas tank. I'll be going to an under the bed setup


Interior, the dog likes it already


What's left of the glove box sticker