Yeah good luck on that one. Pro circuit has been running trick oil coolers like that for a fe wyears now. Pretty much all the factory dirtbike teams are running them. Unfortunately there aren't any available from either side. I know my motor could use it for sure!
I am waiting for retail prices on the cover but the cooler itself is like $190.00 and the cover will be about that and then if you want lines and fittings it will be more of course. I'm waiting for a complete kit to be put together so its tough on prices right now.