Im going to agree with you in part, and disagree. Cutting into anything stock hurts the cars resale value. Which sells more now, the 1965 all original, or the one with replacement parts? For those of us concerned with warranties, what happens if you have to return the car back to stock for warrany work? Never know whats going to come up, or how big a **** the dealer is going to be about holes cut in the air box. Aftermarket CAIs work a bit differently in that they increase the air size of the box, rather than allowing it to pull more straight through. Depending on the design they will pull air from other parts of the engine bay, fenders, scoops, etc. Some streamline the air. Another thing to consider, is it really safe for the stock intake to try pulling that much more air? How big of a debris particle could fit through those holes? "Good Taste" is purely opinion. In MY opinion, I would rather go with an aftermarket kit and save myself possible time and trouble and piece of mind for later on, and hold onto as much resale value for the car as I can. I have not, nor am I, in any way bashed or detracted from your modification here, only tried to add my opinion to the topic. Now I may not be "educated enough on Mustangs" for your taste. I understand and appreciate the heritage. Most people dont. But thats the horrible beauty of these cars. They're cheap, dependable, and sporty looking. I would bet you atleast 85% of every Mustang owner or driver on the road couldnt even tell you what year the car was designed, or anything about it. I am however "educated enough" to know I would be highly skeptic about buying a used car with holes cut in a stock air box.