will all kei trucks of the same vintage ( say 91-93) have the same top speed. 4spd vs 5 spd? a guy was trying to say the 4 spd and 5 spd both really are the same because the 5spd one just has extra low granny gear. anyone shed some light on this? deciding between daihatsu 4spd w hi n lo gears and subaru sambar w 5 spd..... i need to be able to 90-100 kmh and want to make the right choice. please help buying very soon!