1979 AMX

It it is a split plenum, single plane design will a shallow plenum, small runner design that enhances low end torque while maintaining a strong mid range like a Streetmaster. As a bonus, you get improved gas milage, as long as you keep your big foot off the throttle. The low end improvement will amaze you and show a huge improvement at those little stop light bashes. While Holley didn't say so, in my opinion the ports are too small for any of the bigger displacement AMC engines. I wouldn't recommend it for anything bigger than a 360. It would be perfect on a 304. The bolt pattern is the later dogleg design. If you're going to use it on early heads, you're going to have to “ovalize” the center bolt holes using a gasket as a pattern. All the AMC gaskets are cut to accommodate both patterns.

It is designed to work with EGR valves. It you have to run EGR, it's ready to go. If you don't need EGR, just install 2 expansion (freeze) plugs in the EGR ports to block them off. It also comes with the choke block off shown in the last couple of pictures.