Here's an idea: keep the cowling roughly the same size- but keep it enclosed much like the Liberty Dread's engine assembly
then, in the enclosed center section with a "straw" running through the interior, wrap a spinning section like that of the HFBC around the center "straw"- minute and concealed enough so that it can only be viewed through gaps in the armor plating, but fancy-looking enough to imply the powerful and unique powercore technology of the Outcasts (Outcast destroyers rely on a contained microsingularity for their powerplant, which has a direct impact on how the drive systems work. This is implied to be a new technology working its way into the rest of the Maltese line)
Dunno how much modeling wizardry that would require: I'm still very- very new to modeling myself and haven't gotten far in any of the tutorials I've watched due to timeconstraints, but I've been told moving sections aren't difficult
[ sci·am·ach ]
/sīˈamək/
A simple, angry man casually working his way through life on a personal quest to acquire copious amounts of street cred.