[klayfish]

Blue,
I can't suggest what is the best BB combo, as I'm a small block guy. I think you may want to post this in the All Cobra Talk section of the forum, as most of the guys here in the Tri-States are small block racers.

Personally, I would recommend deciding what you want to use the car for most, then that can help decide what motor to use. If you are looking for a nice street cruiser and want a big block, lots of people use the 460. If you must have something more "period correct", you can spend more money and get the 427 or 428. Just depends on what is important to you.

Don't pick a motor for its' resale. Resale should not be a major issue when chosing your Cobra, as you will never got out what you put in. Not saying ignore resale altogether, but don't let it be the deciding factor. Build what YOU want.

Steve