C,
No milling on the intake.
Carb holes look fine to me.
Intake Casting: It's just an aluminum edelbrock intake (CH6)
Carbs:
Outters: 4394-1, 4393
Center: 4392
Yes, I believe this is a Proform metering block on the center carb.
I looked over the carb carefully this afternoon. Everything looks to be in good working order. Fuel rail is in good shape and ready to receive gas. Vacuum lines are attached / in place. All linkage appears to be there and in good shape.
The only thing I've noticed that I hadn't previously seen was that one of the bracket holes for the vacuum pod is broken / missing. I don't believe it was ever there (the screw isn't even there). I can take a picture of this if you'd like. It doesn't affect the function of the carb at all and it isn't loose or wobbly. I doubt anyone would notice this especially because it is at the back of the motor, but I want to be honest about its condition. I can try to post a picture of this if you'd like to see it.
Thanks!
Jon