Upgrade intake manifold?

I just did this thread...
Weiand Action Plus vs Edelbrock RPM

Also, no researching needed to see what motor you have. Crawl under the drivers side and look... it will say 340 or 360 or, or 318 :D. Or, you can look under the drivers head on the front of the block. Sometimes very hard to read here as I've seen the numbers were faintly stamped.