I got myself a GT-R this month and I am starting to upgrade the engine with pistons, rods, and cams. The gearbox is already built. The car already had upgraded turbos but I can't figure out what kind these are. Does anyone recognize the brand? There is no axial play so I reckon these are ball-bearing turbos. The car was upgraded back i 2012 (ish) at Billet Design in Florida, but I have no paperwork on it and haven't got a reply from them.