Hi Terry, Thanks for the muffler info ! I'll contact Jacques. Just the same, it sounds like I may have to fabricate something. I'm considering adapting a large garden tractor or generator muffler. Another idea I have is to use a small catalytic converter shell with some type of resonator on it's outlet. The Subaru 360 uses a similar type of expansion chamber ahead of theby Art Shigley - Vespa Microcar Forum
Does anyone have a Vespa 400 muffler ? Any condition considered.by Art Shigley - Vespa Microcar Forum
Does anyone know if there are piston substitutions that can be made for the Vespa 400 engine ? The original equipment pistons are so scarce. Thanks, Artby Art Shigley - Vespa Microcar Forum
Wanted : Two Vespa 400 pistons with rings and one cylinder barrel without broken fins. - Art Shigleyby Art Shigley - Vespa Microcar Forum