NAPA
Just bought a PS pump for my 96 at NAPA for under $100. Dodge and Cummins were many times more. Got new hoses from NAPA as well pretty reasonable I though.
i am planning to do it in a few weeks if the damn, I mean seal, doesn't break before that.
Good advice on the spare parts. I have already ordered them from cummins. Spare oil supply line, the adaptor between the oil supply line and the pump, a couple of gaskets, several o-rings, a couple of seals, two new power steering lines, and an extra bolt and nut or two. The oil line was about 28 bucks. The spare parts were a lot less than an hour of shop time at the dealer.
I know I will have trouble with the oil line so I bought a 15mm crowfoot wrench to take the line off at the T-fitting on the side of the block instead of the vacuum pump. You will also need an 18mm flarenut wrench for the PS lines.
Good luck.