Offer it up here for swaps for something , by the looks of it even in its current form you should be able to swap it for something decent. After all it's a gtr, with a decent amount of mods, take some good quality pictures, list of parts you know etc etc and someone can come trailer it away..
No offense but with your lack of knowledge parting it would be just as much a pain in the ass than fixing it and you'll be left with half a car and a lot of crap people don't want