I own a 1967 Ford Mustang coupe with a 289 4bbl carb, 4 speed manual trans (to answer your first question, no, none of it is original equipment). I plan on, overtime, picking up an engine block and building up a larger engine for it. I don't want to have to modify the engine bay or shock towers, so I was thinking of going no larger than a 390. I don't want to build it up to be a racer, and I want to keep it clean looking, so no power bulge in the hood or anything of that matter. I am wondering if it's possible, either in my 289, or a different engine I build (302, 351 or 390) to get a large enough cam to make it sound like the "Shelby" in the remake of "Gone in 60 Seconds." I know that sounds like a dumb question from a non-car guy. But I assure that I am not a moron that knows nothing about my cars who only wants it to sound good while having no power. I want the car to be quick, as it already is with a 289, but I just love the sound of a bigger cam that opens slower. I am restoring this car and have worked at dealerships/garages for 5 years now, so I'm not an idiot. It currently has dual exhaust with no H or X-pipe, its true all the way back. It already sounds amazing, I just like the sound of a bigger cam. So I am just wondering if there is anything I can do to a 289 to make is sound more like Eleanor, or if it's possible in an engine that is less than 400 c.i. Thanks!!!