Dan, you don't need one of these with Marks pipes. This is for the holeshot pipes only. Without it, when you go to put up the centerstand, it would bang into the pipes/cans.
With the Marks setup all you need to do is remove the stock, rubber bumper and place it on the tab of the Marks pipes. The tab is located on the crossover tube. The hole drilled in my tab seemed a touch too small for the rubber bumper to fit. Also, if I were to keep my centerstand i would have had to grind about 1/16" off of the left foot of my centerstand. It was just too close for comfort to my muffler in the up position. It did not look THAT bad when on there but it looks way better off. It only takes a couple minutes to throw it back on.