I have the 16" JCW shorties, and they're nice and loud. They have a small taper in the last 3" which I think looks better than the 13s.
The only time I had a problem with Johnny Law was with a 1st-2nd-3rd gear WFO blast up and over a bridge. The deputy suggested I switch the pipes back but didn't give me a ticket.
As long as you take it easy with the throttle and shortshift, there is no problem. They are about as loud as the stock headers with no mufflers and cotton balls in your ears. Does that help? O yeah, $33 per muffler.
