I have a GX-200 on mine with the governor still hooked up, that came out of a Simpson ''pro'' pressure washer, & didn't even have to mess with the carb, after doing a velocity stack, cone filter,, under seat header ''that goes to the rear'',,, & hogged out RLV 91 ''mini'' muffler.
It runs fantastic, & the plug readings are perfect.
I did go with a bit bigger fuel line also.
If you keep the governor in it, you should be fine.