So I went to San Antonio Raceway this past weekend with some friends and took the truck for a run, I put on my stock belt and bypassed the supercharger because I don't want to race with it until I have more fuel and nos + propane to complement blower. So with the truck running N/A it ran 19.5 @70mph (was 90 degrees Fahrenheit outside)... not great but not bad for a 8000 lbs truck that would do 0-60 in 22 seconds stock.
I expect to see good gains with propane since I'm starved for fuel with the supercharger and since nos will bring my EGTs down as well... would expect to get down to 18.5 with propane and F/I but would like to get down to 16-17 @80 mph, I'm optimistic but ready for the challenge, propane injection kit is put together but I had my Vacuum Pump go out so that's the priority right now.