Getting rid of the cat and resonator with a free flow 'tube' muffler (i will phone Al at Calgary Muffler to find out which one) made a HUGE difference but the biggest difference was the 33's.
It is still quiet inside but when my buddy blasted away one day with me watching/listening, it a good loud for the outside world. Sounds like a bigger diesel <img src="/forums/images/graemlins/smile.gif" alt="" />