One thing that I had noticed was that I got about 9 mpg towing the Safari.
I felt like that Nissan commercial where I fill up and watch the gas gauge go to empty! We all know that GM gas gauges take less time to get to empty from 1/2 tank than it does to get from full to half, but to go about 50 miles, I cooked a bit less than half the tank (1/2 to empty) with a fair headwind (20 mph). Coming home with a side wind, I chewed about a 1/4 tank for the same miles. Scary thing was that with the 3.73s towing on flat highway I was about 2100 RPM. Not sure if it was the 3.73s or if it was the extra 1500-1700lbs of the Safari or a bit of both (plus headwind)....but OUCH at $2.15+/gal (gotta use 93 as I reprogrammed the car for more power)....it's gonna be an expensive summer!