Can't be of much help here. If you were thinking of cutting your own from a roll of carpet then I have found Woolies Trim to be a very helpful supplier. They would supply edging as well and you could model the new on your old ones. Easy for me to say !
"Practical Classics Restoration Show" on 12-13 April at the NEC will no doubt have various suppliers present.
Ferraris : 1990 Testarossa, 2000 550 Maranello
Others : 1967 E-Type S1 FHC, 1972 S1 XJ6, 1972 Maserati Ghibli SS, 2006 Ford GT, 2001 Mini Cooper Sport 465/500
Past : 1980 512BB, 1994 348 spider, 1989 300 SL, TVR Griffith, TVR Tuscan, Lotus Elise, 996 Turbo, Cayenne GTS