Your stock pump will work. But I'd stick with the 1.5" ram, not the 2" version. The smaller one will work faster and not have the double hit that you typically feel with the larger ram and you can still turn 35" tires with one finger. The biggest trick to setting up the ram though is to max the ram out before you hit your steering stops, so your setup has to be pretty spot on. If you max out your steering before your ram is fully extended or sucked in, then you'll start walking your ball joints outwards and stretch your C's. That's not pretty, because unless you're capable of cutting your C's off and putting new ones on, you'll have to replace your axle.
The steering box is important, you need to be able to drill and tap it correctly. That's where West Texas Offroad (Home of the Redneck Ram) is a good place to go for your drilling and tapping needs, but there are several places that can do that for you or that you can buy a box from.
In mounting your box, you're going to have to get into that body mount on the left front, so some fabbing there is necessary. But since you're taking your rack and pinion out, you'll have to put a box of some sort in there. So you might as well go with the Toyota IFS box, drilled and tapped, use your factory p/s pump with adaptive hydro lines and a decent ram (1.5"). You're going to have drill through your frame and make a mounting plate with internal standoffs, so just make it to fit the Yota unit.
You can talk to Creek or Dave about what they did, but I think they used either a Pathfinder box or a 1st Gen X box.