Hi guys, I own a pristine low mileage pair of Fulsac 1.75 inch CVO muffler cores and want to either buy a similar condition 2.0 inch core or trade my cores for yours. I am looking for a little more rumble and you may be looking to hear your radio better? Don't get me wrong, the 1.75 cores are nice and provide much more rumble than Harley stock pipes, but I'd like a little more sound without going crazy.