So a while back someone stole my bag of tools which had the only set of Scout keys I had in it . I've replaced the ignition but now I don't have a key to get into the doors , it seems as though replacement door locks are not easy to obtain , I've run across a set for Scout 80/800 and a set for " late Scout " 77- up my Scout is a 75' my question is , what's the difference between the different sets ? Can they still be used ? Modified ?