Finally got home. Checked the Dilgar book, and I was wrong, the Mass Drivers are the "5" Dilgar result. However, the "3" is City Levelers, which isn't any better. It upgrades pulsars to Double Damage, but half the number of dice. This is actually a downgrade, as the pulsars give up 50 of the dice, but 1/6 of the time already got the Double Damage property anyways through Masters of Destruction. Your net damage ship quality actually goes DOWN. What a SPECTACULARLY stupid Refit! Some days, I think absolutely no one analyzes these Refits and Duties tables. The Narn refit may be bad because you lose any refits you've since gotten ; here, you can get a ship that is worse than something fresh off the assembly line! Stunning!
Edit -- it's not so bad, I found a way on certain ships that you can hide your self-crippling. You could change your Virus Bomb Racks on the Wahant, Mankhat or Rohric. Everything else has only Pulsars as single-damage weaponry, so you're kinda screwed.