Sorry but that is wrong, to replace coil springs jack the truck up to get the wheels off the ground then put jack stands under the frame rails at your front cab supports (flat part of frame)remove the tires, put a floor jack under the lower a-arm and remove the lower a-arm ball joint cotter pin and castle nut and using a pickle fork between the spindle and lower a-arm drop the a-arm down using the floor jack and take out the spring then seat the new spring and jack the lower a-arm back up and replace the castle nut, cotter pin etc. No coil spring compressor I have ever seen will work on 63-72 trucks and is not needed because these trucks have progressive rate springs and will not fly out like passenger car springs. e-mail me if you need more information, we do about 90 of them each year in our shop.
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