It's not far off of center. A spacer block between the shifter and the chrome stick put it back on center.
Maybe it's the picture, but the reverse rod is perpendicular to the lever. No issues engaging reverse. It operates as if GM did it. I even got the back up lights to operate.
By perpendicular, I mean the reverse lever is vertical and the rod is not horizontal, so the force required to move the diagonal rod will be greater.
I saw the switch, which was a good idea. I remember reading that the Corvette with a Muncie had an external switch mounted on the transmission.
The T10 didn't have a provision for a reverse switch because starting in 1969, the reverse switch was on the steering column, and an additional rod connected the reverse lever to the steering column. The additional lever also forced the transmission to be in reverse in order to remove the key. That additional rod coincided with headers, which is why you see 2nd gen F bodies (with headers) and 1969 and later A bodies (with headers) always have the reverse lamps on.