got my subrames on today and also found a part number on my mystery dynomax mufflers, they're 2 1/2" super turbos. just wondering who's heard them and what you think? i dont like them, i think they're way too quiet. i want something louder. will flowmaster 40's or something like 40's be a huge difference over these, or fairly similar? i have 1 5/8" LT's with O/R x and full 2 1/2" exhaust. will i see any performance gains?