I just did mine a couple months ago, its a pretty simple and straight-forward job. You pretty much remove a bunch of stuff (fuel rail, injectors, throttle body, EGR, alternator, thermostat, various brackets, and probably more that I am forgetting to list), and remember where it goes so you can put it all back.
I did mine without removing the wiper assembly, but if I had to do it again I think I might. If you choose not to remove the wiper assembly, you are going to want to have a swivel/u-joint attachment for a ratchet so that you can get at the bolts at the back of the manifold.
My repair manual shows you removing the throttle body, intake plenum and egr in one piece, but in my case the egr tube was seized in place to the point that I decided to unbolt the egr from the intake plenum rather than break the tube, but that meant that I had to make a run to the parts store for a new egr gasket. So you may want to prepare for that.
I am not a mechanic nor had I ever done this before, and working with hand tools it took me ~4 hours, not including the run to the parts store.
here is a pretty good write-up:
Ford Crown Victoria Intake Manifold Replacement Pictures
I have never heard of RC brand, but that doesn't mean anything. I used the Dorman unit and it fit perfectly.