I'm not too sure on the rear bars, I think maybe the one moss sells or the one that brainstorm used to sell (that will hopefully be sold by integrated performance).
Edit: The Beatrush triangle bar is nice, I was thinking of getting it, but do I really want to connect the drivetrain to the rear suspension in the way that bar does? I really don't know, so I decided not to grab it, but it is cheap over at Metro Motorsports. I read over at .net about drivetrain alignment being off, and added noise. Not that that's the authority on whether to get it, but I passed on it for now.
The Okuyama bar is nice, but I don't like how it mounts to the frame. Also, alot of people have said it's way too low. The RB is really nice and low profile so you don't have to worry about scraping. Either way, there are reviews and quite a bit of feedback on the Okuyama lower front bar at .net.
Hey Tetsuyagarage, thanks for the pictures, I hope you don't mind me passing them around.