The a/c box is too big, heavy, too much garbage for what I need. Plus I don't want to have to deal with vacuum operated doors with a motor that will not pull very much vacuum because of the cam and such. I'm looking for speed, not numbers matching resto. If a cable operates it, I highly doubt I'll have a problem down the road unlike the vacuum system. Plus, I'll never install all of the a/c components so that'll look cheap to have the a/c evaperator fittings sticking out of the firewall with nothing attached to them. Plus, less money, heater core is less than half of an a/c unit and the heater box rebuild kit was less. Just a no brainer for me.