"Does the throttle cable and linkage lever appear to connect to the carb straight looking down on them?"

Nope - If you're looking straight on the engine from in front of the car, it's cocked at a wierd angle over to the right to connect to the stud on the carb bracket. My guess now is that I have a 440 bracket on the intake and possibly a 440 linkage rod because the accelerator cable is too far to the right of the carb/stud linkage. I'll take some more pics when I get home from work.