I am converting my vehicle over to 2jzgte power and I purchased two JDM market motors, both have this funky water pump on that also has some sort of hydraulic pump on the end of it to(also the pulley fits over a groved shaft, it doesn't just have a pulley that slides over four studs) I assume this pump is to run cooling fans? Do the domestic ones have this at all? The pictures I've seen don't appear to? I would suppose converting would be as easy as getting a us market water pump and the correct pulley? Anyone ever run into this before?