Fria Ligans forum

Salam,
Totally new to Coriolis, we just started creating our characters and ship yesterday. Everything looks so cool!
We decided to take class II (3 crew members + we have AI) and build very fast and super-vanishable vessel. I am trying to wire together ship movement types and perks. There is already a topic on antimatter rockets , and according to Tomas, the site admin:

The idea here is that the rockets only give a bonus to the Advance/Retreat action.

And from core rulebook:
Features (table):

Antimatter rockets: Maneuverability +2, cost: 20%
Tuned Accelerator: Bonus +2 to the advance/retreat action cost: 10%
Turbo Projector: Gives +1 to Maneuverability and Speed. , cost: 20% 

Features (details):

Antimatter rockets only occupy the space normally reserved for the graviton projector.. gains a +2 to Maneuverability when it comes to acceleration
Tuned accelerator: core powering the graviton projector has advanced exhaust controls and djinn intelligences for higher effect. Gives a +2 to the pilot roll for the advance/ retreat action
Turbo projector: graviton coils have been reinforced. Gives +1 to Maneuverability and Speed. Can be purchased twice

1. So, do I understand correctly that antimatter rockets are equivalent to (standard graviton projector + tuned accelerator)? By giving mod +2 to advance/retreat (only)?
2. And there is no equivalent to "Turbo projector" for Karrmerruk ships with antimatter rockets installed, so one cannot increase Speed of such ships?

Basically, I feel that the only profit from Antimatter rockets is one extra module space instead of reactor, and it costs 20% vs 10% for tuned accelerator, and I cannot purchase turbo projector... Change my mind? Or what do I miss?
Hope I explained myself well enough..
Thank you.

I would read this as "graviton projector" being used as a generic term for the ship's propulsion. I would have no problem in my game allowing modifications - such as a tuned accelerator - to the antimatter rockets as well. I mean, if they're supposed to be high-tech, they should be able to be tinkered with, right? However, maybe make it so that the modifications can only be done in certain shipyards, or by techs with a high skill rating.