I will assume you are replacing the tiny two barrel on the 318.
You will have to buy or fabricate the throttle bracket, since the original is in the wrong place., and if you are running an automatic, some tweeking of the kick down linkeage will be needed.
As far as the carb, it should be in the ballpark as far as jetting, the factory jetted them lean to begin with, for emmisions...
Just plan more fuel stops ! Not that the carb will burn more fuel, just your foot will be listening to the music more often !