In order to buy a correct parts for your vehicle, the first thing is to find our what model is your vehicle, below are some collected URLs about Hilux model recognization :

Wiki : Toyota Hilux

Truck Jungle : Full History: Toyota Hilux 1968-2012

Roughtrax4x4 : How to identify your toyota

Cars directory : Toyota Hilux Pickup : Difference between LN106 and LN107