Both front windows, driver and passenger, shall be down (preferably removed) whenever the vehicle is on track. The OEM window opening on the front doors shall not be filled in with any material, other than the material required to mount a NACA-duct for driver cooling. If used, the NACA-duct shall be mounted in the front, lower, corner of the window opening. The area closed off to mount the NACA-duct shall not exceed 50 square-inches. In rain conditions, a quarter window larger than 50 square-inches may be used in the area normally used to mount the permitted NACAduct, in an attempt to minimize the amount of water entering the cockpit. Enough open area for the driver to exit in an emergency shall remain open at all times.
Game, set, match. It is clear that the SCCA put the egress of the driver above the perceived advantage of losing .25 lbs.
You think Jim Drago can get out of the passenger window with the "vent window" in place? If he can't fit then the rule should apply to all.
Jim please post your dimensions to the board so we can compute whether or not there is enough open are for the driver to exit in an emergency.