Who's running manual steering on their car?
I'm debating putting the manual box I have in the 64 for less messing around and cleaner look. It's a P/S car but without a pump. I have a 64 pump and lines but the bracket is off a jetstar 88 (fullsize) and puts the pump where the upper rad hose goes rather than more off to the side like a cutlass would be.
I was also considering switching to a later G-body 442 box with better ratio and feel but not sure about that either I know you need to use a special rag joint that adapts the newer box to the older column, and the pitman arm I think will have a little less arc.