Dear Lownslo:

The PIPE here...battling LOCKUPS on my PC (and BOY, does it need a new, and MUCH BIGGER hard disk-SOON!!!)

At http://www.slimlineproducts.com/4str...st_systems.htm you COULD find your answer...even though these mufflers' COSTS DO hit and "graze" the three figure level (but ONLY "just") you MIGHT have to SAVE up for them...and for the Sig Four Star 60 kitbashed CROPDUSTER coversion that's chronicled here at http://www.rcuniverse.com/showthread...13&forumid=107 that I'll be doing up over this Winter, with an ANCIENT rear camshaft OS FS-90 four stroke of mine for power, and a Slimline Pitts side mount OS FS-91 Surpass muffler from them (and YES, the exhaust threads match up PERFECTLY between the two engines...found THAT out yesterday-Saturday the 23rd-at my LHS) that Slimline muffler is a natural.

Hope these Slimline Pitts mufflers are what you're looking for...I KNOW they're NOT "cheap", but they DO have them...and the Saito 120 and 150 DO have the exact SAME "M14 x 1mm" exhaust port threading, for your information!

Yours Sincerely,

The PIPE! )