Just an update. The 175# springs were not enough with the limited shock travel. We then went with 130#-220# progressive springs with a 12 inch length. These were just a spare set that he had. The coilover shocks on the car used 11" springs so we preloaded this spring 1 inch to install them, then preloaded them further to get the correct ride height. There was no coil bind at ride height. The car rode much better but did bottom out. Next thing to do is to install bump stops as mentioned above. Don't think we will leave these springs on the car. I'm sure the progressive spring is using up too much shock travel. We will most likely go with 200# or 225# springs later on. He's hoping to buy Ride Tech coilovers as soon as he recovers from paying taxes of one kind or the other. I know his pain! Will update later.