TRX300ex power infusion!

[MK300racer7]

im getting a hmf slip on and im going to jet it correctly and i have a NGK iriduim spark plug k&n air filter. i was thinking of a stroker kit from powroll here is the specs. STROKER 4.5mm With Heavy Duty Bushed Rod$545.55. im thinking of a better carb and a rev box would this help with power what else can i do in that range thanks. :confused:

[bradley300]

you could buy a gthunder 350 big bore piston kit and sleeve for less than that, probably that and have gthunder port it for less the 545. cam and labor would be more tho.
and a 400ex carb seems to work alright, thats what ive got, there usually 50-75 bucks