What good alternative donor cars are there?

[brainbug007]

I ended up going for the sierra option, managed to find a 1993 1.8 CFi Azura which was in good shape and quite cheap. Not the best engine from what I understand as it has CVH which there aren't alot of parts you can get to make them better but I figure the 1.8 will be ok to begin with. With the reg plates you end up with, is it purely based on the donor? Wondering if putting a pinto from elsewhere would end up getting a Q plate? Was also considering splashing out for one of the zetec's and would that get me a new plate?