What do you think this 70 Duster is worth?

Hey Guys,

Ran across this Duster for sale and was wondering what you think it's worth. I've been looking for a Demon for my son, but this Duster caught my eye.

It is painted Lime Green with 340 stripes down the side. Paint looks fair, Chrome is tired. Will need weatherstripping. Wrong mirrors on doors, looks like some sort of Walmart purchase. Some kind of aftermarket wheel on it, probably got from Wally World too. Wheels are big bolt in rear, small bolt in front. Has a fuel cell, 8 1/4 rear with 2.91. 318 with supposed 340 crank, rods and pistons. Edelbrock performer heads, aluminum intake, holley carb. 727 trans with reverse valve body and B&M shifter in floor. Column shifter still there. Interior looks tired. Typical faded instrument cluster. Bench seat, originally a slant 6 car.

Gonna try and go back and drive it this weekend, unless his settlement check for his big toe comes in, and he catches up on his child support and decides to keep it. At least that's what he told me.

Whatcha think? 10K? 12K? 2k?