You'll need to make your way to jupiter's fluoridation station when you hit the boundary mission, its actually not too bad to reach. The tricky part is getting up to the second floor - I usually climb those pipes near the electric anomalies on the northeast side, but definitely bring some protection artifacts cause those shocks are no joke.

For the actual blueprints, here's what worked for me: the all-titanium components are tucked away in x15 lab's safety deposit box, youll need that looter's key from those radiation chambers in chernobyl-2. The arm servos blueprint is actually pretty straightforward, just check the corpse near those electrical anomalies in jupiter's vehicle graveyard, northwest section. Then you've got two lead container parts to track down - ones in the flooded csc basement in pripyat (watch out for that bloodsucker though), and the other's behind a timed lock at yaniv station, but you'll need harpy's tech access for that one.

Something interesting i learned - doing the subtle matter side quest first gets you a free exoskeleton chassis, which is super helpful. Make sure you're at least rank 7 before trying to get these installed though, and remember that bolero handles the armor plating while harpy deals with the servos. I usually pack about 3 anomaly suppressors for the pipe climbing part, makes life way easier when you're trying to navigate those electric fields without getting fried.