The 1.6 engine and 2.0L are two completely different engines, everything is different, and everything will need changing. the gear box will not bolt on for a start so you will need a 2.0l gearbox and engine mounts, shafts, if you want to use the 6 speed ST box you will need to change the hubs shafts and brakes etc. Its a HUGE pain in the ass and a very big parts swapping excercise. Easiest way is to sell up and buy a 2.0L or buy a accident damaged 2.0L and swap the parts from one to another. You will probably have to swap out the interior looms also