Just installed the new Gibsons today and fired it up on the trailer... Much more quiet than with the CP Super Cylones I had before. Don't know if it'll get me into the marina but it's a big improvement over what I had. It'll be interesting to see how it does while running down the lake. Maybe we could even hold a conversation inside the boat, wouldn't that be nice! I would also expect these to make a little more power since there's a good size pass-through hole whereas the old muffs had a full block plate.
http://www2.***boat.com/image_center...3mufflers2.JPG
Thanks Jordy!