RobotMan 264 Report post Posted November 12, 2015 I have started assy of the factory A/C system in the Mach1. Due to the repop firewall missing many holes and features I am adding them on the fly. Realized the drain tube hole for the A/c is not in the firewall. Anyone have pics or dimensions of the proper drain tube hole location. Thanks in advance for your help. Rick Quote Share this post Link to post Share on other sites