Ouch! Those prices are a little high (example: US$ 1700.oo for a fully upgraded competition C4 with brake) . . . especially since the US Dollar is weak now. Yes, the 1.80 Powerglide looks like a good option. My thinking, however, is that the three-speed would be better with my little Vortech blower since I would allow the motor to be at a higher RPM for a larger percent of the 1/4 mile run, thus more "time on higher boost," thus quicker. Of course, with the Powerglide I would get to high gear sooner and might actually be on boost longer there . . . . . what say you?