ghazsadon

Hi, Ghazali here from KL and i'm riding Elegan (JR150) to my workplace everyday (total 70km/day) here's my bike pics http://img254.imageshack.us/img254/9814/img0483eo0.jpg Pearl White (repainted) http://img520.imageshack.us/img520/1645/img0482zw5.jpg Recently, when i serviced the bike at Modenas Service Centre (SC), the mechanic told me that my engine already hv problem (makan minyak hitam lor) and eventually need a replacement. I couldn't rebore the block so what i did was i put sleeve but cannot last long. Sebab tu i need some info on JR180 coz i wanna to upgrade mine from 150 to 180cc (more power ma). How much is the engine block together whatever components come with it? (Major overhaul punya kes la ni). Could anyone advice me on this?