here is how I related costs. the diameter of bore and the rod size is directly related to how the steering will perform.
I can tell you from experience that the TG ram is perfect for a stock steering pump and you can even mod the pump if wanted to make it a little better. the bore is 2.25 the rod is 1.125 list price "who pays that" is 373.75 comes with mounting brackets, clevis kit for tie rods, etc... you can use the stock Toyota reservoir also. plus its bling bling and keeps everything up high and out of the way.
track supply ram "probably the cheapest" list is 100.00
2" bore, rod size unknown to website, might come close to working. only comes in 8" length will need to be shimmed internally to limit travel. will need a bigger reservoir because the fluid needs somewhere to go when rod is retracted. pump may or may not provide enough flow and pressure. comes with tractor pins that are less than ideal have loose tolerances and will create slop, so then you will need to figure out a way to modify the ends to work correctly.
In my eyes by the time you modify and change everything for the cheap ram to work it might would have been a little more expensive but well worth the trouble of just spending the dough to go double ended
hope this helps