=========================================================== **** Bounces like rubber! Shatters like ceramic! **** Discover Crazy Aaron's Thinking Putty in grown up handfuls. It's the creativity unleashing, mood enhancing desk toy! caab5n2b7yoMza/ Crazy Aaron Enterprises =========================================================== Brake Horsepower (net) for the 1965 273 with the 4 BBL was 235 using that exhaust. Is that what you have? The original factory exhaust was very low restriction. http://www.accurateltd.com/65-66273.htm shows the repro. Gary H. pablo radic wrote: > > I not about the difference between dual and single exhaust system for my > 65 > dart GT 4bbl. > Is any big diffrence in term of HP????? > thanks again > Juan Pablo, 65' dart GT. <deleted the ads when replying> =========================================================== **** Bounces like rubber! Shatters like ceramic! **** Discover Crazy Aaron's Thinking Putty in grown up handfuls. It's the creativity unleashing, mood enhancing desk toy! caab4CEb7yoMzf/ Crazy Aaron Enterprises =========================================================== ---- 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. b7yoMz.