I purchased a set of Spintech 6000 Pro-Street mufflers for my 72 Demon. Looking to trade
these for a set of their Sportsman 3000 Street mufflers I am running an 2.5 in
exhaust with an x-pipe with turndowns at the rear axle. I should have contacted
Spintech and asked them which one i should use, but did not. That is on me. My
340 is an 11-1 340 with a Comp Street Roller. I would also consider trading for a set of Dynomax Ultraflos. The mufflers are offset inlet/center outlet.
