ORIGINAL: kwik
SR, what I did on my Fw was to make several big holes in the firewall. And in the front top, center of the wing ( inside the fuselage).
Then air can slip out the wheel wells.
I'm looking at that to kwik.
I'm extending the nose 1 1/4' to model an A5 so that will allow me to make even more ducting.
I'm still making the side vent funtional. the large aluminum louvers are almost the perfect size for scale & I can file off & fill in the 3rd louver back for the scale like spacing.