66 & 67 used the same frames, 68 & 69 used the same frames, 70 up I have no clue, but they should line up, holes in the floor wise. If not, drill a couple holes. 67 seats with headrests? Good luck with that hunt.
I use Autometer monster tachs with a shift light. I have a Sunpro in the smaller size you have in the Dart with a shift light on the face that I took off an 84 Ram that worked great.
Does anyone recognize this wheel? Was told it came out of a 67 barracuda (I know, wrong car altogether) but the guy drove it home, so it must work. It isn't the same wheel as my 67 270 has and sure doesn't look correct. Is it possibly out of a '66 or older Dart? I'd just like to make sure before...
I'd think they would bolt in, but the seat frames are different. 66 & 67 frames are the same and 68 & 69 are the same, as you said. If you got seat covers for a 69, they wouldn't fit correctly.