Thanks Fred... they run good on it's side. I pulled the engine out of a PNP Cub that I cartwheeled a year ago. Fred, I put my tach on this engine with the stock muffler and baffle. When I pulled the Baffle out, I got a few more RPM's out of it... seems to run better, no back pressure. Evolution now makes the In-Cowel Muffler for the Evolution .60 and my .60 loves it. With the pitts it gives it a deeper sound. Plus JMHO it seems to look better than that fat Stock Muffler.

I thank you for your answer, I wasn't sure. [8D]