That's the heat riser. Helps warm up the engine quicker. Most after 40+ yrs. don't work so well. I'd look at a local exhaust shop through recommendations. Helluva lot cheaper than spending up to 1K for a system that may or may not fit properly. Go at least 2.25". George --- On Mon, 3/30/09, mikelj@xxxxxxx <mikelj@xxxxxxx> wrote: > From: mikelj@xxxxxxx <mikelj@xxxxxxx> > Subject: > To: 1962to1965mopars@xxxxxxxxxx > Date: Monday, March 30, 2009, 2:24 PM > Hey folks, I am going to break down and convert my stock > single exhaust on my '64 Dodge Polara 500 383 2 bbl. to > a dual. Anyone have any opinions on who makes the best, > easiest to fit systems from the vendor page or other? > Thanks. Also, I have noticed a strange little flap on the > end of the stock, passenger side exhaust header as it goes > into the exhaust pipe. Seems to open and close the exhaust > pipe, is this standard? Thanks. > > Mike in New Mexico > > > > > > -- > [Non-text portions of this message have been removed] > > > ---- > Please address private mail -- mail of interest to only one > person -- directly to that person. I.e., send parts/car > transactions and negotiations as well as other personal > messages only to the intended recipient, not to the > Clubhouse public address. This practice will protect your > privacy, reduce the total volume of mail and fine tune the > content signal to Mopar topic. Thanks! > > '62 to '65 Mopar Clubhouse Discussion Guidelines: > http://www.1962to1965mopar.ornocar.org/mletiq.html. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.