I have 4" tips with flappers, but would like to do away with flappers and extend tips to a foot. Are there any mfgs. that make slip on and tighten down style tips. I think this would be so much easier than replacing all 4 tips on my boat, especially on the 28 Daytona where the two outside tips aren't very accessible.

Not sure... but check with Gibson.

IMCO makes clamp on mufflers, you might check to see if they will make pipes for you.

I'll give Imco a call. Surely theres got to be something out there? Anybody else?

I think I might of found something at Gibson.. I've got to go measure now... thanks

Check these out, muffled below waterline at idle and no restrictions while under way...
http://www.gibsonperformance.com/newproduct.asp

You mean the donkey dongs? Someone posted a picture recently of a boat with them on it. I'll reserve comment.

Hot Boat Mag. just did a big multi. muffler test in the last issue! wrink

"donkey dong" Wow, now that's creative... Is this something that you've made up... Put them on your Sea Ray and they might be a perfect fit...