side by side dyno comparison. I know that it is QUITE a request for such a test, and requires more labor than a filter dyno comparison, but ould prove one set if far superior to the other, and could also prove that one is way too pricey for the performance comared to the other....hmm...i dunno...just trying to find some stable ground....and as far as the "double" welding on the 304 compared to the 321 pipes, i guess for those who actually have them will have to run the test of time and find out if they are going to crack or not....