Brian and I agree with Dave and Geary, bolt them up and forget them. Being two engineers, we would have jumped at the idea of making something more complex than it needed to be, but the fact is, it works as designed! One tip, just make sure the engine, headers, and drive train are all bolted down securely in their final position before mounting the side pipes. Mount the side pipe to the collector, there is a slight amount of play in the 3 bolts to adjust for your desired position. Place the mounting brackets on loosely. Tighten the collector first, then before you tighten the mounting brackets, make sure each bolt is free in the mounting holes to the pipe and frame. Do not push on the side pipe to match up to the bracket! This will put a side load on the mont, and the constant pressure will work it loose over time. Some elongating or opening up the diameter of the bracket holes may be required. Tighten everything down and you are good to go. We have 4K miles and a few track days, and the side pipes have not moved or become loose.

Bill