I saw somewhere someone saying something like you can use one side of your key for doors/glove/hood lock and the other for ignition. Has anyone done this? How is this possible when the key blank profiles are mirror opposites.
1984 Bronco 351 Holley Sniper EFI, 3 Speed Ford Auto.
1986 Bronco 302 EFI, AOD, Eddie Bauer, with 3G alternator.