Can't you just mask up where the orig tag is...wouldn't actually make any value diff to me but many others could walk away...my mate shows me RS1800s at shows and points out things that I still cannot see when he points at them....Ford fair last yr this bloke had a lovely rs2000 and my mate commented how nice it was, bloke mentioned that it had "never had paint", 10 mins later his lip was quivering after my mate showed him just how much of the car was non original. I think I will get him a muzzle.