Also included with the new A-Arms was a machined spacer that, on originally A-Arm equipped machines would have slipped right into place and the upper mount bolt would run through it, providing some stiffness to the bolt. In my situation, since I'd opted not to remove the original J-arm rear mount, I would have to modify this spacer. Basically, all I needed to do was cut the thing into two pieces and make sure the pieces were the proper length. Easy enough, right? I started out by breaking out my chop-saw and tape measure and making a few test pieces out of wood. I wanted them snug, but not too snug so it took a couple tries to get the measurements just right for both front and rear spacers. Once I was satisfied I had the proper measurements, I carefully measured and marked the 1st spacer and cut it on the chop-saw. 1st piece was perfect so I cut the 2nd. Again, perfect. A quick trip to the buffer and the 1st set was polished and ready to install.