If you have drop springs and drop spindles up front you can use stock fitment shocks and just move the shock mount farther up to regain full travel. I did this on a '66 with stock fitment Gas-A-Just shocks and it worked great. Rode as good as dad's completely stock '66, actually better since it had sway bars and a lower center of gravity to minimize excessive body roll and pitch. It did have 15" wheels with 215/75 tires, so maybe the tall sidewalls kept the shocks from feeling too stiff like Scoti describes.
I modified a set of Currie axle mounts and bolted them to the frame rail.
