Old School 318 intake

I was informed by a member of our Mopar club that there used to be 4 barrel intake manifold designed specifically for the 318. Everything I am seeing online is designed for 273, 318, 340, and 360 motors. I would like to track down a 318 specific model that will best fit the smaller 318 runners. Is anyone familiar with that type of intake? If so,where can I find one?