Pafz i you want to see the result of the performance of your mc you should not focused only on one thing. you change the whole bore kit. i was also a beginner like you before i don't know some tweaks to make your mc good performance when upgraded, so i search and ask ideas of the veterans who are fun of modifying their bikes. so they suggest and give me options which are not too costly. now i'm using: kitti rcdi ( old one but good ) rclucth spring bore kit ( 62mm bore, cms rcam shaft, valves spring ) uma rcarb open pipe ( nob1 tribold ) intake port & polish. i hope this can help you. ride safe.