68 Dart Project.

I think in the final version I might have even raised the Master 3/4" and as I remember it had to do with being able to clear the original four mounting holes. You are correct, 1" over is the max without major modification / surgery. The 3/4" raise does stay within the limits of the ball / socket pushrod.

More pictures and info on the recessed bulkhead adapter in the thread linked below. Besides recessing the plugs and wires and adding much needed space in that crowded area, the bulkhead adapter allows the connect / dis-connect to be made from the interior.....kind of a two-fer.

recessed bulkhead