hello, and please help

For your intended purpose I wouldn't pay much more than scrap metal prices for the car. While it may serve to be a good father son project. The early "A" body cars 1966 and earlier don't seem to be in high demand (the only exception maybe the wagons) and all will bring a very low return on investment including the Formula S.

My biggest concern with the car you describe is finding the sheet metal, especially the rear quarter panel. They do not reproduce a complete quarter panel or front fenders as far as I know and both are somewhat hard to come across in decent shape. So you will more than likely be looking for a parts car. One that hopefully is somewhat decent and complete to save your car.

If you do decide to take the challenge. The HP 273 and 4 speed in a small early "A" body make for a really fun car to drive. You also don't see many around these days.

Here is a 66 that followed my home a few years ago. Paid way to much but no regrets:D