Here's a pretty decent 1966 & 1967 air cleaner that was recently removed from a 66 Olds Cutlass with a 330 motor with a 4 barrel Q jet carb. GM # 6422605,the base plate carb hole measures about 5 inches which will fit Holley and q jet carbs.Has surface rust and pitting and is greasy but should clean up nice with a blasting because it's very solid.The aluminum decal is included.Air cleaner is dirty and greasy so if that's a problem for you please don't purchase.You get what's pictured.