Apologies for the late reply. Something requiring 100% of my attention has been ongoing in Liberty at the moment.
Obtaining Liberty Military industrial components is not a particularly pleasant task, paperwork wise. We can, in fact, fudge our way through said paperwork. Systems regarding anything heavier than the Archer class cruiser's siege cannon, however, are a real difficult matter. If you're looking in bulk, I hate to be the bearer of bad news, but the price tag associated to get it from the white market to the grey market is staggering. The Rogues regularly maintain the Scylla class cruisers, if you're looking for something in the cruiser weight class. If it absolutely must be the Liberty Navy tech, I can start collecting up some quotes, but I can guarantee you they won't be pretty.
The other option is getting in touch with the blueprint rippers, and getting you a product line of counterfeits from a more... neutral source. Depending on who's given the job, prices, qualities, and quantities of engine components vary. But, as always with variables, that is just gambling by any other name.
I leave the approach up to you. I am happy to be your broker.