Thanks everyone....im seriously considering no stripes....it looks better and better to me without them all the time...plust now that the a$$ of the car is up, the front nosed down a little, car actually sits like its supposed to! Anyway as far as the heater, no problems. The heater will just pull air from your cabin and recirculate it....it will suck air from your fresh air vent and blow it out the heater.....plus you also have those water vents that can draw a little "fresh" air too. I put a Vintage Air gen V system in mine, it blocks off the cowl completely and just uses cabin air.