75 Dodge Dart Sport Bumper Shocks?

Most folks look for 73 bumper brackets and swap them over. Not too hard to fabricate if you're handy w steel and a welder. The 73 Dart Sport brackets are not reproduced, AFAIK, but the 72 Duster ones are, and they're the ones to modify, 'cause they're close. The fenders and quarters are a bit different on the cars with the 5 mph bumpers. You'll have to figure out what to do with the filler trim, maybe cut it a bit shorter.

Cleaning the impact shocks, and setting them up in a press so as to extend them, could be easier.