Looks pretty good to be honest, proper mods, includes wrist rests and replacement feets. What stabilizer does it use. Did you try taking everything off and look at the pcb?

Backlit boards need Cherry Stabs.
Looks to be Costar made. Bottom cable management grooves looks similar to the KBT ONI series.

Cherry stabilizers. Take off the spacebar, and you'll see them, if you take off the spacebar, and there are which stems stuck onto the spacebar keycap, then that means it's Costar, if it doesn't and there are just black "switch" kind of thing at the end of each corner, then it's Cherry. Pictures can explain better, but I don't know where to find them right now. Sorry! : x

Yes, some people loves Costar stabilizers, I don't.

Oh and this is my edit on my post above.

EDIT: Most people would want to know if it's Costar or Cherry, it's because Costar makes good quality boards, such as Filco, CM, Rosewill. But in this case, like kai bro said, Costar rarely makes backlit keyboard, so I don't think that it's a Costar board.