Hi guys, the driver's side door hinge spring on my '66 coupe is broken and has been for several years. I know you can buy the reproduction springs, but I'm not sure how or if the spring can be installed without removing the door or hinge. I know there's a tool that can be used to install springs on GM hinges, but I seem to remember that it won't fit into the door hinge area on a Mustang.
The car in question has been in the family since 1968, and the doors have never been off the car. I'm not interested in taking the doors off, both for the possibility of chipping the paint and the hassle of trying to line everything back up. Is there any way to install a replacement spring without removing the door?
Also, I seem to remember my father buying a Ford replacement spring back in the late 1990s for this car. Were these springs ever available individually from Ford? I'm not sure if I could find the part he bought this many years later, and I don't really care to install a reproduction spring as I've heard they're obviously a lighter gauge than the original.