@xenon koh, so far nope, I have seen a few bikes b4, and have it all modified, including engine, so far those bikes can sell like others, around the same price. Only matters if there is a buyer or no.

@Friz, I have a cousin, hes a mechanic, but in Kuantan. Yamaha's price are the most stable in market now, 2nd hand value is high. If the bike is only 2yrs it worths about 3.8-4k. Considering what you have explained, if the engine still good, then u can sell it for 2k+. I must say that you have to repair it first to get better impression. Actually bike workshop/shop will even buy it for 3k if your bike dont have any problem at all and if you willing to invest to advertise and sell it u can get even better bargain.