The Antarans never had a black hole generator... in fact IIRC that was one of the best ways to defeat them
Components the Antarans did have:
Death Ray - kills crew and does lots of damage; basically massive version of Neutron Blaster. Impossible to emulate properly in SE4 (you can't have a Security Stations Only weapon also do normal damage) but it should be possible in SE5 at least.
Particle Beam - skips normal shields, does moderate amount of damage; pretty much equivalent to a PPB in SE4 I suppose.
Quantum Detonator - basically just SE4's Self Destruct Device, though in MOO2 when ships self-destructed they also damaged all nearby enemies (and allies) which can't be emulated in SE4.
Interphased Drive - actually a researchable tech, it let you move at warp 7, which I suppose would translate to slightly faster than quantum engines in SE4 terms.
Xentronium Armor - 10 times as strong as starting titanium armor, 25% stronger than the toughest researchable armor (adamantium), and also resists armor piercing weapons (an effect which can be emulated in SE5 but not SE4, unless you make it leaky).
Damper Field - THIS is the tech I always wanted to steal from the Antarans!
While incompatible with shields, it quartered all damage applied to the armor and hull of a ship, so if you got hit with a 1600 HP stellar converter blast, it only did 400 HP worth of damage. Not sure how to model this in SE4 - for one thing, you can't restrict it from being used with shields (though if the Antarans are AI-only and the tech is racial it's no problem - just don't program them to install shields!), and for another thing, SE4 won't let you quarter damage; the best you could do is probably an emissive armor effect where it reduces all damage by a fixed amount (though maybe a leaky shield setup would be better?) SE5 should let you do this, however, as you can restrict components based on other components on a design, and I think you can reduce damage - ask Captain Kwok how he gets the crystalline hulls to reduce beam damage by 5% in Balance Mod!
Any techs I missed?