im trying to figure out away to upgrade my 2.0l d and get more horsepower i cant find any performance parts any where also if i were to upgrade the turbo witch 1 would i use and can u do a motor swap with this car like install the mercedes amg 139 or is there anyplace that can build me a custom engine all the way around i still want it to be a four cylinder i still want it to be diesel and turbo i just want to make it super fast anyway possible but i also want performance so i don't want anything just thrown together i want a serious performance 2.0d that i can race on the weekend and drive every other day please help desperate for knowledge on advancements on 4 cylinder motors