FAST ROCK-et

need some suggestions gotta 2000 that just dont do it for me no more want to build back up but not spend big $$$$$$ looking for low end more than top what pistons and how much to bore it.....stock cylinders and stock head.....also what cool head dome size is recommended how is it determined....also want to change carbs or go with one what size is good for woods,hills riding live in PA NEED MORE POWER (dont want a 4 stroke) t6 pipes kn filter no lid vforce3

I LIVE IN WESTERN PA PITTSBURGH....... I HAVE STOCK CARBS T6 PIPES SILENCERS BOOST BOTTLE DELTA 2 REED CHAMBER KN AIR FILTER NO LID ON THE AIRBOX WHAT SIZE MAINS AND PILOTS NEEDLE POSITION ETC. IM LOOKIN FOR AS MUCH LOW END POWER I CAN FIND..... I SHOOT BIG HILLS AND RIDE MOTO PLZ HELP ME OUT