Most are oval.
That saw should be a runner!
Are you going to delete the base gasket to tighten the squish???
Mike
I did in fact eliminate the base gasket. I used the black sealer that Mopar provides for making gaskets instead. The gasket was pretty thin so not sure how much of a difference it will make.
I picked up a spare muffler from the local repair shop. Going to try some muffler mods on my own. I have a 110V wire feed welder as an eraser, for those little mistakes.