I've purchased the LEGENDARY set for my 66 Barracuda & 66 Coronet. I started the Coronet seats myself and I was sure that the foam was wrong. As it turns out...I just suck at this. It would seem to be a manageable project, but there's more skill to this than I anticipated. I found a local auto interior and he fixed them right up. Seat foam from Legendary or PUI is expensive, but a good upholstery guy can build up weak or thin spots in the foam and save you big bucks. My guy did the Barracuda seats for $300, fixing the foam and installing the Legendary covers that I provided....well worth it.
Another note: Legendary supplies are the best and worth a few bucks more. I cheaped out and bought a headliner from a competitor and it could not line up. It is in and looks good, but it was a fight