Fuel tank leaking, fuel sending unit not giving correct fuel amount, transmission leaks, carb needs to be rebuilt, master cylinder leaks from cover, front end bushings need replacing...on the outside it looks good...but it’s been sitting for about 12 years under a carport. So far I replaced engine wiring harness and front main wiring harness since it shorted out behind the dash and caused a small fire in the engine compartment. Lots more to do...
Bad to FEBO from New Jersey
Nice looking Challenger in Y1
Good that you sorted out the electrical first. Lots of things happen to a car sitting that long; gaskets dry out, gas tank rusts from moisture etc. My car sat in storage since 1984. Moisture collecting in the tank actually created rust holes. You may want to consider replacing the fuel lines too, just to be safe.
Good news; Plenty of resto parts are available now that were not available 20 years ago. Sound like you are methodically going through the car. Smart way to go. Good luck with the work. Pics of your work always welcome.