I have a 2009 SLT 3.7L. i have a 750 lb trailer and a 780 lb bike i trailer to Sturgis every year. I can get better gas mileage pulling it with the nitro than my 85 F-250 with a 351 Cleveland. I have actually tried this. However i am getting rear end drop and the front end is light and steering isn't the best. I want Air shocks but not sure there are any. I think the air bags for coil springs is all that is available. Does anyone know where I can find actual air shocks? Any help is appreciated! thanx everyone!