Re: 69 SB with A/C heater box
It is hard to explain, but you will understand when you get the box out ! If you have both sides of your evaporator suitcase together, I believe the two nuts look like they are just holding the suitcase cover to the firewall. (on the engine side). They are about 6.25 inches apart and in the same vertical plane.
69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1