what next?

none, not trying to be harsh but you should stay with the blaster awhile longer your what 14 you said? i dont think you can handle a 450 or a 250r. and your always posting problems and q's about the blaster. learn to master the blaster and learn how to work on it b4 you get a liquid cooled machine
 
whoa that guy must be smoking something, one to get rid of a blown motor, two to try and sell it for that price without a motor
 
none, not trying to be harsh but you should stay with the blaster awhile longer your what 14 you said? i dont think you can handle a 450 or a 250r. and your always posting problems and q's about the blaster. learn to master the blaster and learn how to work on it b4 you get a liquid cooled machine

Yeah, what he said^
A 450 is a money pit and a 250R not much better.
I am 5'11", 215 lbs and with an extended steering stem my Blaster fits me fine. How big do you plan to grow? :)

Hey, fudging your age is called "posing".
Be proud of who you are man. 14 and you can maintain your own machine?
Nothing wrong with that.
Be who you are, ride what you want, dig to the truth. No pretensions.

Steve