Robb
Order 2 sets of Vacuum pod springs from Summit or a Holley dealer, then start trying the different colors. I had my six pack over 10 years ago and don't remember what color I ended up with.
One way I use to see which spring is lighter; Push 2 springs against each other in your hands. As you push, the lighter spring always moves more. This allows you to test your "box" spring against all of the new ones in the kit, if the color is diiferent.
Rob
