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  1. MopaR&D

    Header-to-muffler exhaust recommendations, pics appreciated

    I have a set of Doug's D-453 longtubes I want to put on my Duster and change up the exhaust in front of the mufflers while I'm at it. Car currently has block-hugger shorty headers with homemade 2-1/4" head pipes going into a Pypes 2-1/2" system with X-pipe. I want to get rid of the X-pipe and...
  2. MopaR&D

    Exhaust sound bites

    We used to have multiple threads to post videos of exhaust sounds but I can't find them... so I'll start another one! Here's a video I took of my Duster just now. Carb is finally dialed in where I want it and the new engine combo has about 600 miles on it now.
  3. MopaR&D

    Best way to tweak engine? Exhaust/t-bar clearance

    Last year I fab'd up my own downpipes to come off my Hedman Tight Tubes and hook up to my existing Pypes dual exhaust setup. The pass. side pipe was really close to the torsion bar so I dimpled it a bit and it was OK; now about a month ago I finally took it to an exhaust shop and got everything...
  4. MopaR&D

    Header coatings, how necessary?

    My '70 Duster w/ built 360 currently has a set of Hedman Tight Tubes headers which work OK but the downpipes I had made by a local shop back when I was rushing to get the car together are pretty crummy now (crushed, leaking, etc.). I took the car to a specialty hot rod/racing exhaust shop and...
  5. MopaR&D

    Temporary exhaust system

    I am currently rebuilding the 318 for my '70 Duster and I don't know if I'll have enough money for a new exhaust system when I put the engine back in, and I definitely don't want to hook back up the stock system (WAYYY too small and quiet). So I was thinking, how would it work if I got two...
  6. MopaR&D

    Classic Chambered Powersticks

    Hey everyone, I just joined yesterday and was wondering if anybody here has any experience with Classic Chambered Powerstick mufflers. They are a chambered muffler, kind of like a glasspack but without the packing and a bit different (better?) design. They sound SUPREMELY bad-*** though, even...
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