Jason, I took a closer look at my setup. The aftermarket AFB's have a slightly lower air cleaner mounting surface, about 3-1/4" from the carb base vs 3-3/4" for an original '66 carb. My fuel inlet is on the side of the carb which makes it wider.... I can't go with a dropped base since it won't fit inside of the filter element. The stock '66 carbs have fuel inlet on front, so maybe you can drop the base/element around the carbs. Throttle linkage will interfere at some point, that seems to be the next interference point on those carbs. Maybe you could do a dropped base on a stock carb setup. Here's a few more pics of my setup. Base is just 1/8" alum plate, with cutouts for the acc pump... you won't have to make clearance cuts for your stock carbs since the a/c mounting surface is higher. The base plate attaches to some simple brackets on the carbs. I used Dzus fasteners to make removal of base easy. A piece of alum angle attaches to base for the top lid to attach to with a stud/wing nut. If you like doing fabrication, you can just buy the Ford filter element, Baldwin filter PA 632, make a base, and maybe a plain flat top (or have something milled).