we had a guy called george who ran raven racing in sheffield for a few years , moved down south about 4/5 years ago (woman!) used to make his own systems dunno if hes still doing it ( the pipes not the woman!) if the clowns on 'american chopper' can do it dont know why we cant . the reason they are so expensive , is they charge as much as the market will allow i.e. as much as they can ! thats why i started doing my own spraying , even setting up was cheaper than a 'pro' paint job .