Louis, when I took mine out, it was easy. The only holes you'll need to cover are the 2 where the heater hoses go through the firewall, and the one big one where the blower motor is. If you're going to try to put some other heater in, then it will be different. I just took it out completely because it doesn't get that cold here, and I only drive it once in a while, hopefully be getting it to the track soon.