Thanks for the extra info Guys
I'll get my screwdriver out and start dismantling my donor 18 and we'll see what fits what. Then I'll fix my original 18 and my 19 (and i'll prolly repair the 18 with the power problem, and be even more short of parts (but you know how that goes) it will be hard to take a 90% working machine apart for parts, but that's how I've ended up with 3 Toughbooks ).
The screens don't show up very often here (Perth, Australia) so I'll keep looking on Fleabay (I've got my eye on one in Scotland), and Gumtree (I got the 19 mk3 in Perth from a seller on Gumtree ).
I'd rather get a genuine screen than a copy, prefer to keep mine OEM where I can.
Thanks for the offer, but I've only been to Texas once, 20 years ago so it might be a while before I'm there again :0