A '73 Dart does not have a Park cable. It uses the same linkage for all transmission positions, Once you get inside the transmission, the park linkage splits off with a rod that operates the parking pawl.
cudamark,
Great info (as always). So, 73+ 904 transmissions are exactly like the transverse Torqueflites w/ an internal Park linkage. Indeed, I have our Voyager's A404 apart in my garage, awaiting parts. After rebuilding an A604 last month and this A404, I am no longer afraid to take on my 904 and 727's. They look scary in the schematic with all the nested parts, but are very approachable when taken apart (w/ shop manual). The A604 is the simplest since no bands, but a 904 or 727 master kit costs less.