I’m with Slantsix64 & Matt on this one. The mid size AVS Edelbrock offers will be an excellent choice.
A few members here have tried the smaller 500 on there 318’s. While they report a gaggle of compliments, the one or two constant short comings that is noted was a limited top end power and/or that the carb seemed to be drawing from the secondary side to keep up on the Hwy speeds. That of which may very be a gear ratio issue.
