need advise on my 4door. worth keeping or part it out.

got a 73 valiant 4 door factory 318 auto disc brakes air. i had the heads rebuilt put in a small cam and 4bbl dual exh. the car runs awesome but it needs paint, the front seat recovered rear springs and an entire front end rebuild. ac has been removed. dont get to drive it far for the suspension needs too much work. is a 4 door worth the cash it will cost me to fix all thats needed? im also working on a 70 d100 short ute that needs and engine. its in overall better shape was thinking of swapping the drive train and just part out the valiant. love the car just cant decide if its worth fixing. thanks for listening and any opiions welcome. its the one in my avitar. looks pretty much the same ecept i have removed the cloth top.