Ive Been looking around for the right drop base air cleaner for my 455 olds . It’s in a 80 cutlass with Edelbrock intake with a Holley 650 duel feed carb . Right now I have a cheapo from advance auto 2 inches thick by 9 . It does fit under the hood with no clearance issues but it is TIGHT . I would like to go with a 14 inch x3 k&n style , but will need all the room I can get . I do not want to cut the hood or replace it with a cowl hood at this time . The 9 inch fits nicely between the reinforcement braces on the underside of the hood but any bigger and I loose that space thanks