Hobbsy - here's a pix of the G-62 setup. This is the largest can they sell. It was about $110 and they want about $75 (ouch!) for the flex pipe. I managed to score the flex pipe for considerably less off the 'net. I'm running an APC 21 X 12 component 3 blade prop with it and most of the glow powered planes drown me out when I'm flying. Still have pretty decent power too, but of course it's restrictive and there has to be some power loss involved. It's the quietest gasser I've ever heard! Getting back to the topic though, N1EDM, if noise is an issue at your field you should take RC34074 up on his offer - that strap on muffler he's offering is exactly the one I used to tone my S.T. 90 down to 88 Db! It's probably the most effective off the shelf option available, and $30.00 is very reasonable - they are not cheap.