I've been kicking around gathering up the stuff to put AC in the car for my build. I'm having a time of getting the stuff all gathered up. So I'm thinking of going the Vintage Air route. I don't really like the big suitcase in the engine bay. I'm not looking forward to using the big suitcase in the passenger compartment. So, if I am going to go this route, what exactly do I need to do with the current firewall holes? Can I close them up, and will I need any opened up? My plan is to continue getting the car mobile, some sort of engine in it, hopefully an LS3 or something like that, and then do the nice stuff like stereo and AC and all that as I can fund it.