I got my headlamp plugs from DKSalvage, via eBay, they seem to have a few MkII ZSs and 45s for breaking. It's a bit fiddly to do but well worth the effort.
Money would be good. only joking bud here's one to give you an idea on price.http://cgi.ebay.co.uk/MG-ZS-N-S-HEAD...d=p3286.c0.m14
I'm sure Scott will give you a good price for the two and i will get them dropped of too you for free.