a sebring interior for my 66 dart

The Sebring seats are definitely the ones to pick, because of their inbuilt 3-point seat belts. I've seen them re-covered with period-correct vinyl and cloth materials for our old cars and they really blend in well when redone that way.

Did you get the brain box (electronic control unit) for the seat belts? You'll need it. See here.
yep got the brain box for the belts. and was able to test it (it works!)

I'm thinking of recovering them a lighter beige color though not in vinyl(to hot in florida for that) it'll take a while before that gets done ($$$$$)
I've already cooked my legs in shorts by making that mistake of vinyl and top down in the sun