Lock your van in the garage.
Remove all the locks and send them to me with your ignition key.
For £10 per lock I will strip, clean and reset your locks to one key.
I will then post your locks back to you recorded delivery ASAP.
Obviously subject to post charges.
Or, copy your ignition key and buy a spare set and send them on, then sell the old ones afterwards.
The central locking kits will only work on the front doors, the factroy CDL vans have a different boot lock and the standard one can't be adapted to use CDL.
You can use a solenoid to open it, but thats more work.
Also, need some connectors for the pillar of the van to get the side door to work, then the factroy CDL side door lock assembly is also different to non CDL..
Buy a cheap 2 door kit and do the fronts, the rest is time consuming and expensive.