This has a part number but it is scratched , so can't read it all. Guess is De7e? Might be 57 truck or optional air cleaner? New info is 57-68 Optional /truck 12" across 4" high overall 5" opening for carb, four barrel? I'm guessing here if you recognize this send a PM please $75 plus shipping-consider your fair offer Send zip in private message USPMO or PayPal , buyer handles fees Thanks Roy