i figured coz the stagea is new i might as well be the first to get a custom made exhaust. it was done by my local performance exhaust shop, southport exhaust, and starts with stock manifold, a custom dump pipe (r33 doesn't fit coz of something) then mild steel 3in, hi flow cat and zetti muffler. All up, $1,000 bucks. immediately you notice the increase in torque and top end power and sounds awesome as well. :headspin: