I have a 71 Cuda with an AMD shaker hood. The original hood springs offered too much resistance, and it seemed like the hood was going to bend at the hinge. I then bought the fiberglass hood springs but they wouldn't open the hood far enough. I now have Camaro 210 springs which seem to be the right amount of force to open and close. I don't know if they would be doable on 70 hinges.