the no.1 question this week

The one question which kept flashing through my mind.. should I change my spark135 to a 150 Kawasaki KIPS... from what i know it a bike which are only distributed in Asia,made by Kawasaki Thailand. It have a powerful 148ccm 2-stroke engine with KIPS power-valve. But the most important thing is the cost... The last time I check was 4k ++ after trading my spark135... I said that I will make the decsion only after i get Q but from what I see.. it will be much early than what i plan...