looking for intake carb / manifold recommendations for 318 1973 La block
The AVS2 500 electric choke for a 318 with a mild cam is my choice for a street car. The 650 if you like big carbs.
Edelbrock Performer 318-360 has the smaller ports to match 318 stock heads.
Last is the Pertronix I, easy to install and has 2 wires instead of 1 to the coil .Never know it isn't stock unless you are looking for it. Just my thoughts.