Curious - Any sources? Looking at publicly available details and copying them might be intellectually dishonest if it was a piece of coursework, but this isn't an academic research project. Taking features from something that's known to work is the fastest way to get to something working.

If there's actual smuggling of designs or trade secrets going on, I'd be more interested. But if it's just "the rocket looks the same on the outside", that's hardly "industrial espionage".