Im happy to split if you just want the cases. All I can say is they came from a retired electrical engineer who worked for a US company in Saudi Arabia. Im not sure what was in them originally.
As for the meter LCD mod. I doubt thats something I'd undertake tbh.
BTW I also have a Racal Dana counter that I saved from the recycle bin. (see pic)
If you want any or all this stuff let me know!
Best Mark