You may want to look at a 65 Chevy van with manual transmission, 230 engine and manual choke which was equipped with a Carter YF 4145s.
The distributor vacuum advance connection is below the throttle plate on both carburetors so this should work okay.
The Carter throttle arm location is in a different position (forward of intake manifold) to the Rochester (rear of intake manifold).
The Carter throttle arm lowers to open the throttle valve which I believe is the opposite direction from the Rochester (please verify that).
Maybe you can find a picture of a 65 van with a 230 and see how the linkage was done or maybe find an assembly drawing off the Internet.
You may have to convert to a cable accelerator linkage or modify what you have.
Your manual choke cable may need to be rerouted.
You can find used and rebuilt 4145s on ebay but make sure it has all the parts you need (bridge to hold the air cleaner, choke bracket etc.).
