Firethorn with Buckskin trim.... what makes you say there were only two built?????

No offence mate but the car is stripped, has no engine, missing all the GTS/Sandman bits, has lots of rust and someone has done a bodgy sill job, it's only a 253 engined ute and you want $8500 and no dreamers... Seriously, I think you're the one that's dreaming.

Post up the Ebay link when you list it, photo's will tell us more about the car and it will be interesting to see what bids it gets.