You can also greatly increase the handling and driveability of the car by rebuilding with stock components.

Do as you wish, but if I were a buyer looking for a nice T-bird, I'd pass on a unit with a MII front. These cars will only get more valuable as time goes on and a mint original will bring all the money. Don't say you'll never sell it, you don't know what will happen in the future.

The T-bird is quite a bit heavier than the MII car is and I'd be concerned about using lighter-duty components. Plus, you'll have to upgrade the MII brakes to have decent stopping power, so why wouldn't you just convert the Bird to discs and stow the original parts away in plastic?

Give these guys a call and discuss it with them:
http://www.mpbrakes.com/

Or these guys:
http://www.ssbrakes.com/

Or these guys:
http://www.baer.com/