Strange brake prob.

I looked at a fairly nice 73 Duster today (4500 bucks) But there is a strange problem with the brakes. It stops just fine, good pedal feel, but after 10 or so minutes of driving, the front calipers start to grab, it doesn't lock the tires up but if you put it neutral the car will start to slow down & eventually stop by itself. the owner said after the car sits ( overnight presumably) the brakes are fine again. Whats up with this car ? Any ideas?

With the look of your Scamp,you know your way around A-body's. Going through the brakes is no problem,plus the 73-on brake parts are cheap.

Use this as a bargening chip to knock $500 off this deal.

"You know I will have to go all through the brake system with all new parts,could easily cost me 5 bills"
"I could go $4000 cash today"

Something along those lines......