I originally planned on a muffler mod, gasket delete, and auto-decomp removal.. after reading an few threads and talking to the owner, he told me he didnt care what i did to the saw, just to do my thing!
I kept the muffler around 70-80% of exhaust port, matched the lower transfers to the case, but left the upper transfers alone. Raised the exhaust a few degrees and widened to about 60% + of bore and polished. Also widened intake a little and set at 75deg. Bigger bar, bigger spikes, and a serious deep clean! I love the ported worksaw theory, modified yet extremely reliable.. I believe this 357 will fit this class nicely.