Hay Willis. I'm just thinking out loud trying to wrap my mind around what is happening in there with diff. mods. So I'm just thinking. Ryderz has a lot more hands on experience with tuning exhaust systems. If I were you I would try it the way Ryderz suggested it first. See if it suits your needs. You can always take more off the head tube later if wanted.
Thanks, have to cut it open to do anything with baffles and shortening head tube, and weld it back up, hoping to only have to do it once