IF RMC have a web-site then I cant find it, and my limited experience talking with them wasn't so positive (after eventually tracking them down).
Personally, I'm a bit worried about them taking on a premium product like the Kirkham, particularly if they're the exclusive importer.
I wouldn't be too worried about the value of your car boxhead, (because it's not my car
) anyone could have brought in a Kirkham up to now and I understand there are a couple in Aust. A couple more wont matter.
LoBelly