Mikilon 125 - M996-250SB Performance

Hi,what can i do to get some more horse power from this motor?(the motor ,i think it is a copy of a honda CG 125,or XR 125)
I think i know a CDI that fits mine ,its a No Rev limit CDI ,any of this will fit?

http://www.amazon.com/Racing-Ignitio...nese+dirt+bike

http://www.ebay.com/itm/GY6-50cc-125...-/181260781254



I already opened the Exhaust removed the fiber and a piece of metal that was all loose inside the exhaust...

If this motor Gets fucked up im thinking to get a new motor ,what 250cc,200cc motor fits this bike?Attachment 17115Attachment 17116

Water cooled CG125
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62mm kit are more useful than those CDI
Lifan :http://item.taobao.com/item.htm?id=36366772925
Loncin :http://item.taobao.com/item.htm?id=36357242564
Zongshen :http://item.taobao.com/item.htm?id=36359711865