Using the old RMZ frame. nope photoshop!
I was about to say, that looks like an 05/06 RMZ with a 2 stroke motor shoved in there (pure heaven if it's an 06+ RM250 motor

) Before I sold my 06 RMZ450 I debated shelling out 1500 to have a local company that specializes in 500AF conversions to do just that for my RMZ (though I was leaning towards a 500 motor, couldn't really decide on the 500 or 07 RM250 motor swap).