cheers Shaun and Sideways.
i have a spare head kicking around and was thinking of getting it done for next year. Im collecting bits at the moment for a tublar top mount and elbow.
Whats the pros and cons of tubular elbows (of the turbo rather than arm variety

)? i have one that has a seperate wastegate dump pipe that reconnects to the elbow and thus exhaust gases about 6" later. In power terms, would i be better off making it connect further down into the downpipe? or maybe make into a screamer pipe? Only interested in performance gains, not a cool sound. How loud are screamers? wonder if they will pass circuit sound tests?