273 Commando air cleaner ?

Here are the pictures of the Dodge Ram air cleaner bases. I am not sure of the years. If I remember right, they were throttle body. I use a metal jig saw to cut the bottom out, oversize. Then trim on a belt sander or grinding wheel. Also pictured is a Commando air filter so you can see how it fits. It is just the right size for a new Edelbrock and AVS carbs. I assume they would work for a Holley also, but do not have one to test. The base without the switch is lower and is about the same height as the original base, silver.