Body cutouts for Cooling
 

Hi

Which vents are permitted to be cut out for cooling on the D4 body?
I have the one on each side at the upper front. Which other vents can legally be cut out?

Can the body only be trimmed to the cut lines?

Thanks Jeff

here is the page from the hb tips guide for body vents
http://www.hbeurope.com/pdfs/buildti...and%20Wing.pdf

But im not sure on the rules for body cutting, is there any? I know there is for touring cars