yep, here's the mac 32 on the USL:


after pulling out the baffles in the muffler the spring didn't hold as well and the exhaust leaking out at the port made a mess, so I had to make a couple little aluminum spacers to tighten the front that doesn't have a spring

after I worked all the bugs out of the engine everyone is pretty impressed at the field, does pretty well for what it is.