Just to fill in some gaps, the spacers have their own lug nuts. If anyone wanted to do what I did, the spacers are a few hundred bucks to have made, but they work well. First you mount the spacers to the hubs with their own lug nuts, and torque them, and then you mount the wheels to the spacers and use a second set of lug nuts for the wheels. They have to be retorqued a couple of times in the next 100 miles, but then they do well.
This allowed me to use some modern tires, which at least doubled the streetability of my old truck. I'm using Uniroyal Laredo 265/70R-16 steel belted radials, and they are slightly shorter than the original "schoolbus" tires on split rims that I had before. 30.6" in height to be exact. This doesn't help my top speed any, which is why I'm looking to put a taller gear in the rear of my truck.
I've heard Patricks has ring and pinion kits to make the stock rear end taller for better cruising speed, but I didn't see anything online at their site. Still, having a modern posi with better tapered roller bearings and modern brakes is more appealing to me than spending all that money to re-gear the stock rear end and still have an open diff, ball bearings, and old brakes.
