There is nothing stopping anyone from making an eve mod, but know this.
There are only 15 ship slots per faction. 6 frigate, 4 cruiser, and 5 capitol ship slots. Eve has far more ships than slots available to you so you will have to omit some ship designs.
Then you have ships fittings to consider (and all the infighting that will cause, because no one outfits ships in eve the way they are "intended"). You cant duplicate Eve's complex weapon arrangements, ranges, and damage types in Sins. You cant duplicate ECM/ECCM, hardeners, shield mods, etc, etc, etc. You can "try" though.
Yes even with the update Mimmie ships are still trash cans held together by duct tape, and super glue