[Spuds]

Originally Posted by shiumai

Understood and point taken. Here's some info on the particular thruster in the article:
http://www.astronautix.com/r/r-40b.html

A thruster itself (not an entire propulsion system) is a relatively simple component (nozzle with some valves) that isn't difficult to integrate. Thrusters are made by a host of different manufacturers and it's common to select different ones even in the same platform product line, as long as performance requirements are met.

It ain't rocket science. Oh wait, it is, lol.

I've heard that before lol.