May Purchase this 73' duster, need some help!

The windshield wiper pivot seals are notorious for leaking. Check under the dash for evidence of water leaks. Take a ice pick to check the floor pans in front.
Green doesn’t bother me as much as the reverse landau top. But that’s just aesthetics.
Check for rust under that.
A 7 ¼ sure grip sounds wrong.
Research the bolt patterns on MOPAR rears and check that.
This car has been “hot rodded ”. No telling what they put in the car.
Does the fuel gage work? Probably is good. But the voltage regulators are also notorious for going bad behind the dash and cooking that.
Legendary interiors sells correct reproduction seat covers for about 400 dollars a piece.
As I recall, the early B body rear will "fit". Sort of.