door lock knob

Hi guys I just broke one of the plastic door lock knobs off trying to break in, with a piece of packing tape after locking the keys to both of my cars in the mk1.
What other cars have the same size knob,thread etc Ive got a really good breakers yard out here with heaps of 70's cars in it, there is a mk2 four door witch I
guess will suite? but just in case
 
Cheers