Well.. to break it down a little better. The Auto will be better for a race off the line since it has almost no boost lag between shifts. Longer gears... and no shift time. Pluse you can boost it off the line. But in a drop down race.. the manual has much better control of its RPMs and in a top end run the 6 gears help out alot. I have to say that with a quick shift and good set of tires. the manual trans Supra would get the Auto in the long run. Also has alot to do with the driver. But in the quarter mile. I dont see the Manual trans catching the auto. Just off the auto not having any shift time for those 4 shifts the manual has to do. 4 shifts at loosing .1 secs a shift is almost half a second in the quarter mile.
Rich