Thought I would show a few pictures of the front spring mounts since all this was done before I started this thread.
The springs have 2 tie bolts that serve as locating dowels and keep them from slipping sideways in the mounts. The extra hole in the middle was where the original tie bolt was located. I use it now just to hold the springs under the frame during assembly.
I did make a small modification while I had it apart this time. The rear clamp bolts are probably the highest loaded pieces in the front end as they are in tension add carry the wieght of the car. This is aggrivated by the fact that the springs act like levers, increasing the load. The bolts are technically more than strong enough, but I thought a little added safety would be a good idea.
I tapped some 1/2' thick pieces for a 1/2" bolt. These were welded inside the frame at the rear of the spring mounts.
I added a small tab to the rear off the lower spring plate for this bolt. A spacer goes between the frame and lower plate. This allows the 1/2" bolt to be torqued properly and serve as an independent back-up to the other bolts.