Humm, you are right, it is 3", need to get smarter on the moving leaf springs, seen pics of that being done before/during/after, but, I've never done it myself.
On a slightly related but different note; tomorrow, I'm media blasting some fragile trim, Mercedes wheels, and a plastic headlight bezel for an Infiniti G35 as a test; the customer wants to paint it the color of his car, so, all day I was cleaning my blast bay; cleaning up/out the Plastic mix that has some crushed glass in it to 'etch' the metal, can't do that to this stuff! I'm going to be running some Acrylic thru on these items.
As I said, I cleaned my entire bay out of the existing blasting media. I filled 3x 55 gallon drums and ran the rest up into the hopper thinking it would be just a little bit; nope, it filled it up! So, what to do! It's too expensive to throw it away, so, in comes the GTX for a Sunday morning Media Blast session! I'll just sweep it all up in a pile, then introduce the special blast media when the pot is empty. I'll get about one hour of blasting time, I should get about 1/2 of it to 3/4 of it done, perhaps more!