Made some real headway today. Firewall just about done. Found some 1000 degree (F) sealing tape that made things easier and fire putty for all other hard to get at areas. The engine cover, nose and forward body section are now in high fill primer. Used a paint roller to apply and was very pleased with results (see images). Thanks for the roller idea, Mike. Aero bubbles turned out well too. For those wondering if I penetrated the inner vertical plane of my wheels/tires with these aero bubbles, I strung the car from front and rear centerlines and am legal with a little room to spare up front. Actually, both bubbles tuck inside the widest part of my body so no worries.
John