Thanks, it is a priority, that's why I'm asking for advice
I'm going to try and find someone in the south florida area that sells the equipment, that way I can make sure I get something that works with my setup, rather than ordering online.
I will echo what has been said about safety equipment. I will not go out on the track in HPDE 1 or any other session without ALL of my drivers gear on. I ALWAYS wear my HANS device and have since I started racing again. (I saw someone fracture their neck without a HANS.)
Apex is one of our sponsors. I do not know exactly where they are but Linda is great. I bought my latest helmet from her. She will work with you to get you what you need.
I, too, use a top mounted air system because my seat has a halo for side to side head motion and the side mount does not work well with those. (See the NASCAR guys. They all use top mount.)