After few failed tries of passing vehicle inspection to get a licence plate and registration document, I'd finally passed it. Now I'm able to drive on public roads. The vehicle insurance wasn't expensive at all, about 119 zl (25$) / year.
I had to change the steering wheel that has approval in EU. I found some used MOMO steering wheel, but for my purpose it was OK. Second thing is to get proficient speedometer.
The built-in device was broken, I didn't knew how to connect it to honda engine. Therefore I've bought a bicycle speed'o and it works.
Here are some pics: