Double-nutting the suspension...
 

I saved all of the factory nuts and bolts off of my spare chassis. Going to try an old racer's trick on my 72'. I'll be loosening up on all of the control arms and double-nutting them to help them move freer and be in less of a bind. Has anyone else ever seen this done before? What were the results? The Pure Stock and F.A.S.T. guys I have talked to swear it will help.

Never heard of this but very interested in the results .

The double nut idea.
 

The double nut idea is fine for drag racing and getting you car to hook up AKA weight transfer. Just so you understand, The torque applied to ALL RUBBER SUSPENSION PARTS is VERY important.
The rubber items in your front and rear suspension ARE PART of your suspension. With all rubber items loose and double nutted Your car will drive like it has NO shocks and or all the suspension is worn out.
Many design tricks can be used on a RACE CAR, They also work very well.
Some of the (many different type of racing ideas) do not work well on a STREET DRIVEN machine.
Use caution when " Playing around with the suspension on a street driven machine ". :(
Bob