interchangable parts?

[cully]

question for the guys that know!!!

1. front and rear arch liners are the ph2 an 3 and 3/4door the same?
ive got to source some for my ph2 gti6

2.central locking motors same question ph2/3 3/4door the same?
maybe need to source a N/S front motor

3.central locking motor for the hatch ph2/3 the same interchangable ?
this ones missing


4.also may need a lock set with key blade for 2 door hatch+ ign are these
interchangable ?