I understand that randy, again though, this is to get the average person into the ballpark for their intended usage. If it is for a vehicle that will see low rpm usage, it should be clear from the list and my description of the list that it is not effective for a single plane or tunnel intake. and it goes both ways, same for a street/strip engine not working well with a cj or performer intake. No person in their right mind should think that the tunnel is good for driving to work, the store, then back home, every day with stock heads, cam, and exhaust. No single manifold is pointed out as the best for any specific situation.
There are a lot of people not "in their right mind" out there who have their own ideas, LOL.
There are TWO tunnel-ram, A 460 manifolds from TFS.
The Blue Thunder, dual-quad manifolds are "dual plane" and they are offered in both standard port size and CJ port size.
There is an FRPP Motorsport A460 manifold and 2 EX514 manifolds for the A460, too. All single planes.
There is a cast, 4 barrel , single plane FRPP Motorsport C460 manifold.
The single plane original Torquer is also missing ... it is not very good at WOT power or anything above 3,000 RPM and is best for gas milage and off idle part throttle driving.
I guess I shouldn't even mention the fairly rare cast manifolds which are out there.
Price Motorsports offeres seveal adapter plates to mount one family of manifolds to another family of cylinder heads.