This replaces some vehicles spoilers with the zentorno racing spoilers the installation instruction is included and this method can be used for any car with any spoiler however some do not match and look weird so I tested some cars with the spoiler and these are the ones that match it best.

Leave some customisations you've found in the comment and I'll add them

You need Open IV for this to work

UPDATE 1.1: Added Tailgator bonnet and GT Wing for Police Cruiser and GT Wing for Dominator