I just put one on my 2000 Dodge and here's what I used:
Go to Carquest and ask for their "improved" lift pump for a 2000 Dodge. This pump is an inline pump that will handle any stock Cummins, or Duramax and is really easy to make a mount for.
All I did to mount it was weld a 4'x4" piece of 1/4" plate to the frame after I drilled three holes in it, to fit the new pump. Naturally the wires came from the old Raptor setup, but you could also run a new wire (fused!) from ya keyed-ignition source and ground the pump to the firewall someplace, so the connection will stay clean and not rust.
You'll have to hunt down the necessary fittings to use with the pump but I think I got mine right there at the Carquest store? They don't have to exactly match the threads, because you can use some Teflon tape to make the threads nice and tight.
I think the new pump was about $90 or so.