I recently got the ac in my 65 mustang redone and it's awesome, only problem is water drips out of a little nipple on the bottom right side of the unit. It seems like it's meant to have a tube on it but where do I run the tube to? unless i drill a hole in the floor or the firewall for it, I don't know where to take it.

There should be a tube that runs through a hole in the trans tunnel.