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I have a set of slp race twins with twin stingers and flanges built for a 800bb ves iqr. Very very hard to find. These are no longer produced and add huge hp gains. Slp claims 19 dynoed hp. Proven power. Call them and ask for yourself. They currantly have exits out the back of hood but this is easy to change with very simple measures. They are in good solid shape. No rust. New are 900 plus but are no longer available asking 575. Please contact me at 763-528-0067 matt.