I've run across an odd ball(I guess) type of the standard dry truck air cleaners, need help I.D.ing the thing.

The bottom of the stock one is a smooth transition as it necks down to where the clamp secures it to the carb. The odd ball I've seen is the same animal but it's neck is recessed up into the base. I saw one on ebay for sale one time said it was early Corvette but not convinced.
Most early Corvette I've seen have several styles of air cleaners and most are totally wrong. Have seen similar units on other makes of cars with same lid but the rest is different yet.
Anyone???


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed