Cool, good to see someone got it. Now Jonny needs to get the motor out and you take away the roller so he can put the TE37 back in his own driveway (not mine!), haha..
The rust is pretty severe, BUT, I think most areas will interchange with T18 and the rest isn't particularly complex in shape. And its not rusty in some interesting spots, most of the actual chassis and floorpan are quite good hey, as are the front guards, hatch is pretty good...
Personally I'd buy a cheap T18 donor vehicle, you'd get doors, trim, panels, T-series diff to bolt in.