dual quad air cleaners

Any know where i can get the small dual quad air cleaners found on early vettes? The chrome ones with the louvers in the sides. All i can seem to locate are the bigger ones that cover both carbs.

 

Corvette Central. Part #151205

 

Thank you!!!!!

 

Anyone know where you can get these with a 5 1/8' neck in them?
Trying to make a set of edelbrocks look a bit better.