One advantage to the T-Bird on weight distribution is the engine is set back nearly behind the front wheels. If you look at the upper control arms of a 55-57 T-Bird you will see they are ahead of the motor, so the engines weight is not all on the front wheels. The rear wheels are just right behind the seat. The setback engine and short wheel base is probably an advantage for the T-Bird. I would guess that the 460/c6 with headers and aluminum intake is not that much more than a Y-Block with a factory supercharger set-up and either a t-85 w/cast bell housing or even heavier a Fordomatic.
My T-Bird has a Cavalier rack and pinion on the front. It has some bump-steer issues, that I need to work out. I haven't spent much time on it since I'm going back to the factory manual steering when I put the Y-Block back in.
I originally bought my T-Bird to do an F-clone and race it a the Y-Block Shoot-Outs. I figured it would make a nice combo with two black VR57 powered street/strip cars.T
Pat Fleischman