Cobra replacement parts needed

[Ferraridriver69]

Hello gentlemen. I'm new to the forum and would appreciate the help of the experts on here.
A client of ours owns a Classic Roadster 427. I've done some reading and am aware of the stories. Their website is still up but as you all know there is no response. We've been asked to personalize the vehicle for the lady that owns it. We are changing interior and exterior, incl. adding a rollbar hoop.
I contacted Classic Roadsters to buy carpet and seats instead of getting them redone in different colors.
Therefore my question to the experts is this. Should I employ our upholstery shop to get this done or should we buy a ready made (possibly molded carpet set from one of the builders that would match this car's contours. Also she would like to add some sort of headrests to the vehicle. Are there seats that incorporate those or should we include it in the rollbar hoop?

Thank you for any and all suggestions.
Best Regards

Karl Troy