Since you have a Tracker and you are exchanging an 8-valve 1.6 for a 16-valve 1.6 , the engine will bolt right up. The main differences between the two engines is the head and the supporting electrical wiring/fuel delivery/ignition/ECM (the Engine Control Module - engine computer). So, you will need the engine wiring harness and the ECM from the donor truck along with the engine itself to make the task ultra-easy.
Hope this helps!