I have a stock 85 Honda 350x. I am looking at the kustom kraft big bore kits.They say bolt it on an break it in...I am new to the big bore options etc.. I know just some of what I have read on old posts. Bigger carb.. 400ex...crf 450...Pipe the bike what do you think is a good recommended place of start...over size clutch springs...where do you get them ? What brand etc..? I believe anything over 12:1 ratio must run high octane fuel. ..For the most I think that would be a good starting point. ..Anything about it would be greatly appreciated!