JonnyMac - I don’t think you’ll get much out of dyno’ing your car alone. Your best bet is to go back-to-back with your competitors (i.e. when they have the setup at the track). Otherwise there are way too many variables - save your $$$ and wait until you can do it at the track to compare against the high-HP guys.
-Vic
P.S. what kind of truck did you buy last year? I’m shopping for something diesel and big.