Does anybody have this done...and if so do u have any problems with it? I've done everything I can to make my bike faster besides going into the motor, and I'm hesitant on doing it bc I want my bike to stay reliable. And if I do this kit should I also do valves, cam, new jet kit, carbs? Any info would b great! Thanks.

 

If you are concerned about reliability, then leave it stock. Anytime you start modding the motor, you're going to lose some reliability. If you insist on doing the kit, you will get way more power if you do the head mods also, with a good cam, and a good port job. If you want to take it all the way you could get bigger valves. If you have an aftermarket air filter and exhaust, and you have your jetting right then you should be able to keep the jetting the same and keep the carbs you have.

 

Your questions tell me that you need to contact a reputable builder for advise.
Maybe Mickey Dunlaps "4 stroke tech".
What have you done to it?