QUOTE (Morphius @ Apr 23 2008, 07:45 AM)

Heh, I need to stop talking about them out of game, then.

Yes, if you want it to have any kind of surprise effect... Unless you're talking about the usual chromey kind and the surprise will be it's all meat...
QUOTE
Anyway, I do want it to be legit...
You are the GM. Whatever you say is legit, is. By definition. don't fret too much about getting it "right", mechanically; there's no "balance" in the rules as-is cos they're scary freakazoid badness that you should probably just run away from. Just assign it some numbers that are *nearly* low enough for the party to beat... No point sweating the numbers when the whole concept is just a rationalisation of way to sidestep the Essence rules in the first place. Great inspiration, but even this simulationist reckons that arbitrariness is the way to go.
If you want them to find the blueprints as a way of discoveriong weaknesses, then, again, what you say goes in your interpretation of the world. If some corp has found a way to use a flashback system to replace the IMS, then all power to them. It might even be saleable information, if the party has the cojones to play ball with the other scary people making cyberzombies...