1) mine blew the top end. has a wiesco stock compression piston that was put in backwards due to previous owner. the piston can be resurfaced. so i was curious how much difference a high compression piston would benefit me? will it run to hot for tight trails?
2) gotta stage 1 hot cam! should i notice a decent difference?

3) mechanic porting a polishing the exhaust outlets and porting the intake! should i notice a nice gain with a stock piston,cam and port job?