This is what ddgonzal is meaning

http://datsun1200.com/modules/myalbum/photo.php?lid=22032

http://datsun1200.com/modules/myalbum/photo.php?lid=6248

http://datsun1200.com/modules/mediawiki/index.php?title=Doors

Straigten it out and it will work but if it does show to be a lock issue

If you want individual locks check this...

http://www.new-datsun-parts.com/datsun-1200-parts-locks.html

but as you can see they are individual locks and keys which sucks

I did this and just updated it all and all keys work for all locks and ignition

http://www.ebay.com.au/itm/KEY-SET-CY ... ories&hash=item3a7cd3cb80

Unfortunately bprojects did have the door lock mechanism itself but are out of stock currently so hopefully that gives you an idea

Ok cool thanks really appreciate the help ...I have the same problem as with ddgonzal the pull knob and the key won't do anything ..so just straighten that rod out and hopefully it'll work ...thanks heaps guys