$ doors are becoming more and more popular everyday due to the fact that people has families and when going to cruise ins you can always have another couple with you. There is a great convenience with 4 doors. Instead of chopping the top I would shave the doors therefore you don't see all the handles, drop it down, put some larger wheels and tires on it, and trick out the interior. You could even go with buckets and a console if you want. Put some money into the engine and pipes to get a real good sound out of it, and I guarantee you will turn quite a few heads. Anything old is good whether it be a 2 door, 4 door, or a wagon. This is just my $.02 worth but I wouldn't chop it and take a chance on something going terribly wrong and then have to end up making a 4 door convertible with a Carson top.