[aerohead]

I've added in a list of Comparative Drag Factors in #1 permalink.
From the table you can get a sense for how 'low' some others have already gone,and how the T-100 stacks up against some well,and lesser-known vehicles which have been tested and reported on.
I'll continue to chip way at quanta.
I've perused acceleration data for dozens and dozens of cars and it looks like putting the T-100 in the 130 Club would require about 210 available horsepower.For the 150 Club I'd be looking in the neighborhood of 300 hp.
This isn't a direction I'm interested in going and I've pretty much convinced myself that the A2 Wind Tunnel in Mooresville,North Carolina should be my next destination.They have load cells for force measurements and I'm comfortable with the frontal area I came up with.I should be able to get the actual Cd and also blow smoke all over the truck,video-graphing the whole thing for You-Tube.
I'll send a note off the their General Manager,Dave Salazar,and see if they can shoot me a dollar figure to think about over the coming months.
I want to know the top speed of the truck,but I really want to know the Cd.
Cd 0.16,from the GM mpg method is 'interesting',a measured Cd from a real lab would be a nice comparison.And it would be worth a lot.