Originally Posted by Racing Division Inc
I have done a major reseal of the fire wall, including plugging holes and weather-stripping the rear body work.
Possibly peripheral to the current discussion but this reminds me of a diagnostic method I once saw on a TV DIY program. Here they were trying to find door or window leaks, so in a closed garage they turned on the car's heater blower to max, closed the doors and windows, and then walked around the car with a lit cigarette near the seams and openings looking for distrubances in the smoke trail.
OK, obviously this is where everyone runs for the fire extinguisher and the life insurance policy, so maybe there's a better smoke source than a cigarette, but the basic idea seemed useful as a way of finding cabin air leaks.