Sliding door parts - advice please x

I am trying to find the last few parts for our sliding door, unfortunately we didn't have them when we bought him so not sure what all of them look like.
It's a rhd, 1974 bay
I need the main striker plate so that I can lock it - (i have the rear one but not sure what the other one looks like or where I can get it from?
Also, need the parts to stop the door coming off when it is shut. They go on each end of the track under the window. What do the they look like and where can I get it from?

Any help would be gratefully received

 

http://www.jerseylooker.com/FicheDump/EarlyBaywindow/8-052.jpg
http://www.jerseylooker.com/FicheDump/EarlyBaywindow/8-056b.jpg

 

Does your door have the lock barrel in the door handle itself (early vans to '73-ish), or just below it? (I suspect below given the year, but worth checking).
The striker plate & mechanism for the early doors are different.

 

Hi, the door handle has the lock barrel in it.

 

mine has the lock in the handle and ive got to replace it too !

 

This might help http://www.itinerant-air-cooled.com/viewtopic.php?t=9144 @Jeni Jacques

 

@jivedubbin that link is fantastic - i'm going to have to do something similar to that - mine needs some tlc.