修改 MBK MOTORCYCLES STUNT

示范	生產日期	動力方面，KWT	動力HP	卷立方厘米	建築類型
MBK MOTORC STUNT Stunt 50 Naked	01.2013 - ...	3	4	50	Motorcycle
MBK MOTORC STUNT Stunt 50 (SA09)	01.2000 - 12.2006	4	5	49	Motorcycle