RE: pipe resistance
i guess that is probably true for just about anything theres no stabdard for anything anymore i will try the 1 1/8th orings first and see if the hold up they fit nicely and the flange tightened up nice i guess it will be trial and error like anything else . if it isnt raining later today im getting this beast wet wish me luck lol. although i dont think these orings are going to stand up . any1 have any ideas about how much heat is coming off this exhaust port ?