i bought two of the davis diesel mufflers - the first was for an os61sf. this was the "new" version which does not have the strap- it has a flat plate brazed to the muffler - you drill through holes in this plate to mount the muffler. this muffler worked very well and was nice and quiet. so i ordered one for my next st g90 - but they sent the old design with the strap mount- and the strap mount is a real pain. it will not mount on the g90 and stay there. so i tried modifying it, but it still wouldn't stay. so i gave up on this muffler. if anyone wants it i will sell it for $30 inlcuding shipping. i have ground off the sides of the aluminum adaptor a bit but it still works fine.

ed