out of commission, cant drive my dart anymore

Sorry I can't help with a lug source.... Suggestion: Go to a hardware store or go online and buy a 'thread file' to re-file those 2 that are not so bad. This one might be OK, and may be at Lowes/HD. I don't know where it is made, but an old USA made should be in everyone's special tool box.
8-3/8" Long, External Pipe Thread Restoring 98875818 - MSC

Good tools don't come from HF !