Len405: I don't know if the MK3 uses the vaccum system sorry

Gibson: The doors etc will all have the required mounting holes, as should the boot. I'm not sure how the petrol flap lock works tbh, but I do know you need to get a flap with a pin on the top corner which goes through a hole in the bodywork (its covered by a rubber bung on a non CL car) What colour is you car mate theres a few CL cars in my scrappy...
This is all the text the haynes manual has about it:
1 The central locking system fitted to some
models comprises the following (see
illustration):
a) Pressure/vacuum pump
b) Control element - on driver?s door
c) Shift elements - on remaining doors and
fuel tank flap
d) Interconnecting tubing.
2 To remove the pressure/vacuum pump,
release the rubber strap in the luggage
compartment, remove the cover, then
withdraw the pump and disconnect the wiring
and tube.
3 To remove a control or shift element, first
remove the door, tailgate, or luggage
compartment trim panel (as appropriate). On
door elements, carefully peel back the
protective foil. Remove the element mounting
screws and disconnect the tubing. On the
driver?s door only, disconnect the wiring.
Disconnect the operating rod (except on the
fuel tank flap) and withdraw the element.
4 Refitting is a reversal of removal. Ensure
that the door protective foil is firmly stuck to
prevent water penetration and use doublesided
tape to secure it if necessary.