phonedawgz. Actually Because of the space and the design, I need "rubber" that will / can actually touch the muffler / tailpipe.
See in your first pic where the tack weld is? I want the rubber in between the metal strap and the tailpipe (actually in between a "similar strap" and the body of the muffler but you get the idea). The muffler is suspended in an area with appx 2" above and below the muffler so there isn't room to use a hanger like that.
If I simply use the metal strap, it will transfer heat to the trunk floor. The ceramic high temp mat and heat shield I built into the trunk (combined with the air gap) is more than suitable but if I can find some rubber to insulate it further I'd like to do that before I finish everything up. The ceramic mat can take direct flame without damage but will transfer some heat on the other side of it. (We had the flexible mat glowing bright orange @ 4000+ and after removing the flame it immediately is bright white and cool to the touch again.
If it comes right down to it. I can actually mount everything without any rubber in between (I just won't carry a box of chocolate on my trunk floor :-)
2.5, That may be a possibility , A friend races Diesel Trucks and I left him a message as well. I'm searching now. Something designed to go in between a band clamp may work .
[This message has been edited by 3084me (edited 03-16-2011).]