Thanks for the info guys! Multiple people seem to suggest going with the standard baffle, I'm not a fan of the Q baffle, itd either be the big bore quiet or standard. I like my motors to breath and i don't lug my motor either. Peak tq. at 2500 rpms isn't my plan. DD reccommends going with the big bore quiet....more money? I really like the looks of the lowcat, but it doesnt seem to be a popular pipe for performance motors. I've never had any experience with supertrapp pipes, but I've heard them. I think either would be an improvement over my propipe hs, i guess.... I'm also not into chasing numbers, I just like getting what I paid for.