My 74 Duster project.......

Well...about 5 years ago my son and I started this project. The car is a 74 Duster with the Gold Duster and Space Duster options with factory power steering and front disc brakes with a 318. It was that frosty green color with a white vinyl top and that dark green interior. It's an Arizona car so there was no rust...so we proceeded to strip it completely down. My son took care of rebuilding the motor...not the original. We had the original motor but when we bought the car we also received a "rebuilt" motor. He also rebuilt the 904 tranny with the help of a friend of mine who is a Mopar fanatic. There was very little bodywork that was needed and it's been completely repainted..only needs to be wet sanded. So far we have replaced the rear end with an 8 3/4 with 3.73 gears, new leaf springs, shocks, gas tank, replaced all the suspension bushings with poly urethane, engine wiring, and more then I can remember. Still needs a few things.....finish the wiring, drive shaft, radiator, and the interior. It was a lot of fun.....I say was because about 4 years ago I went through a divorce..then moved..so no work has been done on the car for about 3 1/2 years. My son joined the Army almost a year ago........so I am trying to decide what to do...keep the car and finish it or sell it? I have tons of parts and we both have a ton of money in it. I hate seeing just collecting dust..........so I need some advice....motivation to finish it or sell it? HELP!