Body cutouts for Cooling

[joffacn]

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

[dan_kitty]

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