I'm looking at a B5100E. I've actually had one before, along with a B7100HST-D that I currently own, and they are fun little tractors. However, the B7100 has a square "block" in the hydraulic lines where you can bolt on an outlet for adding external hydraulics. The B5100 I had did not have this "block". Is it possible to add this "block" to a B5100? I'd like to buy this tractor, but the main reason I need it is for running a firewood splitter, so I will have to have external hydraulics. Thanks for the help.