( Not mine) ... You do not see these available anymore. For Big Block AT Air Cleaners 68 & up
Always rusted out
https://www.ebay.com/itm/68-69-70-71-72-Chevelle-Camaro-Corvette-Caprice-NOS-air-cleaner-duct-396-427-454/222844273300
1960 GMC Short Fleet side 455 T400
1969 Chevelle Wagon 3 row #'s LM1 M20 ( project)
Lets see what that goes for, I bet it'll be pricey.
Sold for $302 US. Will likely end up on a big dollar Chevelle.