Well, Rebuild? maybe 500 yes, maybe longer. It all depends on how it was driven. i can guarantee all the pre-combustion chambers are cracked in the head, probably has hairline cracks in the head(not a huge deal, but gets worse). probably could do with a head gasket. transmission probably leaks into the transfer case(minor) probably would need a clutch and rear main seal. Probably needs injectors rebuilt. Probably needs new cam bearings.....
Im just going off the top of my head. Not trying to put you off it. It will run for a good while as is I bet. But how well and how long is the thing here
I bought my 3B and 5 speed with 290xxxkms and I've had to do all of the above. and still have to do cam bearings and buy a new head one day...
Just so you know what to expect.
And yea what cruiserdan said, If the body is that rusty, the frame isnt going to be a gem underneath. Id take a bright flashlight with you and a piece of cardboard to lay on and go over the frame from underneath. Check spring mounts, brake lines, fuel lines, tranny mounts, shock mounts. If you can press through with a screwdriver anywhere, its not good. and if youre serious he cant really get mad at you for doing so.
