Does anyone know the exact mechanical differences between the C20XE and C20LET. I'm not just talking that the C20LET has a turbo, what im thinking is if I wanted to turbo my C20XE what mechanical parts would I need to change to get the right compression ratio? i.e. rods, cams, pistons etc? is it as simple as this followed by bolting on a T28 changing the ecu, airflow meter? or is this just a method thats prone to failure and i might as well buy all the C20LET bits and bolt that in?