Karl Troy,
I had mine done by a local upholstery shop that matched the colors of my Cobra and it was not only better quality carpet than they offered back then, but it cost less. As for the headrests, yes there are several different model seats that you can use that have them built in or you can put the headrest on the roll bar like some do. One guy here had 6 way power Porsche seats in his with the headrests. That is one nice think about these cars, you can do about anything you want so far as modifications.
Ron
