Of course a Floyd could be fitted to a Dominion. You could fit a floyd to 2x4 if you wanted to. Jackson won't do it though, and whether it's viable in terms of the routing that's required and the subsequent refinishing is a different question. And naturally Jackson want to 'encourage' you to order a custom shop. They're a business after all - Ford won't give you certain top-line options in the base-spec car - you have to upgrade.
You can post pics here just like any other forum. They just have to be uploaded to a photo hosted webside such as photobucket / flickr etc:
As for IDing a guitar, it's easy enough to figure that out for yourself. There are plenty of places that are hosting Jackson catalogues, so when it comes down to it, make some effort and try to figure out what you've got. Import serials mean sod all to most of us so picture ID is the only viable way.