I've never seen a kit before. Looks to be a kit made up of the available repro strips on the market from Metro and Steele (perhaps). Although, the door opening seals do APPEAR to have a better quality end cap than the Steele ones have (or had when I bought mine years ago). Only thing is, the door seals are for later cars like '78 and up. Early ones had the front part end towards the bottom of the door, being nit picky.
Surprised they offer a kit for the very rare 1975 model Aspen/Volare, lol.