Removing the gravity well projectors from the interdictor cruiser and adding two engines results in the original Vindicator heavy cruiser it's based on.

There's some extra detail on this one, including the extra turrets. Hence 'heavy' cruiser.

The original model was created by the following team:

Interregnum Credits

Mod Team
GoaFan77 (Lead Developer)
Ahobgoblin (Apprentice Developer)
ERock72 (Art Lead)

Voice Actors
MiWadiAddiction (Corellian Scout)

Assistants
Sersanara (Maps)
BrutalTheory

Modelers
Evillejedi
Maxloef
ERock72
Warb_Null
Jeroenimo
Suk Munky

Modders from Other Mods
For advice, encouragement and occasional assistance
Lavo of Sins of a Galactic Empire
JasonF of Star Wars: Requiem
ZombiesRus of Sins of the Fallen
Nomada Firefox of Star Wars: Alliance
Maxloef of Star Trek Armada III
Technophobeus/Dul Gukat of Star Trek Armada III
Istaku Mesk of Black Sun: Retribution
Myfist0 of Sacrifice of Angels 2
Psychoak of Sacrifice of Angels 2

Special Thanks

Players/Testers
DarknessDK
Sergeant_Pepper123
Railgunner2160
conran7
Ludo Kreesh
Technophobeus/Dul Gukat

Star Wars Artists
Special thanks to both fan and official Star Wars artists whose work has done so much for the galaxy far far away, including but not limited to...
Ralph McQuarrie
Darren Tan
Viper Aviator

http://www.moddb.com/mods/star-wars-interregnum

http://forums.sinsofasolarempire.com/447324/page/1