Holy Crap, that belongs to a friend of mine!... It's definitely NOT an ebay special. He bought that thing because he was still missing the one he had in high school and should never have sold. I bet he's sick about having to sell it.
FWIW, he wanted to put in a np435 but couldn't afford it at the time, If I remember correctly, the C4 was on the outs which is why he did the conversion originally (Like many of us he's not a fan of autos).
I've ridden in this truck many times and I can tell you that it really is his baby. He's done everything on it to the best of his abilities (with a lot of help and advice from the guys at Driven). He bought it as a nicely built truck and then added most of the goodies himself. I don't know exactly how much he invested but I do know that it's a lot more than he's asking for it. No 30+ year old vehicle is ever perfect, but this one is a lot nicer than average.
I'd put his rig up against that $44K Barret Jackson Special any day.