Well went to pull the plug on my hustler Kohler 16 hp. and well busted off. So easy enough pulled the head off to make it easier to remove broken plug an piston wont move up or down (frozen) will let the whole mess soak a bit and see if I can free it up. Got seafoam filled crank case and some in the piston jug. will see. otherwise it looks like a rebuild or replacement. Its a k341 what are the things to squeeze a bit more power out of it. Figure I will replace the carb with new so I dont have to rebuild it as it seems as frozen as the motor.

Where is a good source for upgrade cam, header or any other upgrades in performance. Or shall I just be happy with what it is?