Golly!
Now I'm REALLY getting hungry for my T5 cd!
Ha! Well, what I
haven't seen is how one might go about replacing a body part with a cybernetic implant. I haven't been shown that page / those pages. I don't know if they exist. But, it seems as though they
should exist, wouldn't you agree? And yet - not seen it.
On the other hand, the above discusses creating organic devices. And, there are rules that handle, for example, the senses, in a concrete way. So, therefore, one should be able to geneer eyeballs that see in a different spectrum than ours, or see better than ours. And an add-on organ which senses life, or electromagnetic fields.
Specifically, though, I've not seen the text on replacing your arm with a mechanical one.
On the other hand, I've seen the robot creation rules, which are tailored to work as if you're building a character. So, I don't see why you can't take a human (for example) and plunk in an electronic brain (plus a power supply). It also has a subset of organic devices for the senses, with a price list, so I'd probably use that when replacing senses. And there's various limbs to choose from, and manipulators.
So I think the robot creation rules will suffice for cybernetics. One caveat, though: if you want a cybernetic arm capable of superhuman strength, you'll probably have to have your entire skeleton yanked out and replaced with something stronger. And that might be beyond Imperial science, although there is a price list in there about robot skeletons.
...by the way, robots can have neat add-ons, like high-pressure or vacuum sealing, and brain insulation for very hot or cold environments. I suspect normal bodies aren't equipped to support that. Although,
maybe you could talk your referee into replacing your PC's legs with lifter plates...