Thanks! I've definitely thought about incorporating a cutout valve into the side exit along with "y-ing" into the stock exhaust. There is plenty of room...just need to find a cutout that works well. I have some issues in the past with them not sealing all the time.
I plan on designing the trim plates so that they can be personalized and are built to fit the customers setup. We are in the process of setting up a CNC plasma table which will make this a possibility.
Here's a few pics of the progress on the build over the last couple of weekends.
Light weight dimple die'd bracing for the tubing
Shot from underneath the front end
Tweaked the trim plate a little and made it a bit more symetric with less rivet holes

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Up next will be supporting the tubing using some adjustable heim joints that run from the motor/block...should work great!