Check the ATF. Brown in the radiator could be coolant mixed with oil -- which would give you a pink milkshake in the tranny.
If you could get it for $1000, you might do alright parting it out, but that's a lot of work. Personally, I wouldn't feel right patching that frame and selling it. Not worth the bad karma... or carma as the case may be. See what I did there?