Not the throw out bearing that goes inside the belhousing around the input shaft.
I have set up a slave cylinder on the outside of the trans to use the orriginal throw out arm though, and once you get it working it's great (some adjustment required as it wasn't a factory setup).
My only concern with the hydraulic T/O is if there is a problem with it, you have to pull the trans to do much of anything about it. That and with the extra feature (the hydraulic cylinder) you have doubled the things that can go wrong with it.
Murphy is in full effect on all my vehicles.
