Avoid "custom" plates like a plague.
Exactly,also some people who have fancy frames around there number plates.Cops love to pull over them.
Is it possible to have custom or regular registration
One of my friends in Warsaw wanted that but they wont allow the first 2 or 3 numbers as they represent the district the car is registered at.
Use to be in US also when the cars starting with "Z" number plates meant a rented car,but they eliminated that cuz of carjackings.