If you can't pin point an issue with the upholstery or under the seats, consider maybe that it's coming through the vents? try changing your cabin air filter.... you never know if that might help! I suggest greenfilter.com
I live 45 minutes south of Pittsburgh and I have the cold weather package on my Challenger SXT Plus model. I am glad I do. I remote start it in the winter before going to work and the heated seats and steering wheel come on automatically in cold weather and I am glad they do!!!!! :)
Every Muscle car I have owned has always been a stick and I have had the luck of finding a few rare models with sticks. My first car, a 1984 Aero Trans-Am was a factory five speed stick, my second a 1987 Fiero GT was a five speed stick and my 1991 Z/28 Convertible was a factory five speed stick...
Wheeling used to be a great place to live until all the Factors came and ruined everything. I used to love it hear and thought I spend my whole life here. No I just want to get out and move to the mountains of Tennessee.