Following my how (not) to video guide to fitting Pollycarbonate windows to a race car I was asked to make a window with an opening for pace notes in case the car is to be used for rallying. I have never done this before and do not know if the method I have used is within the bounds of any regulations. The pacenote portal should be big enough (in my opinion) to get an arm in or out whilst holding an A4 piece of paper. Big enough for a check or service point but rubbish for a drive throug restaura