Hey Guys , I am working on gathering all the materials for a exhaust system ... most likelly a straight piped system .
I am not sure on the Header pipe , I have seen few of the stainless flex sections , I am not sure if I should build my own down tube , basiclly retaining the stock turbo mounting flange .
Dose anyone make a performance header down tube , I have seen the Bosal header .
Thanks

greg

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1983 300cd

You'll have to make your own pipe. There is no legitimate performance aftermarket, only wannabes selling "performance" air filter kits.