Yes it is possible to a longer key. Long ago I replaced my factory key with one that has a long shank. It has been great for keeping the keys off the dash. The problem arose whn I tried to put a new ignition and lock set in. The later replacement locks use a different blank that does snot have one of the needed grooves. So I can still use a spare blank for my old lock, but not in a new ignition. switch. What I don't know is whether the key blank maker still makes keys with grooves on one side as needed as needed for the original ignition switch. But I can say that it has been really good to have all these years because of that dash problem with the shorter stock keys. Do a search for key blanks for vintage vehicles and see if you can find that key blank maker.