BTW, I looked up your truck manual and it's 6600 lbs with a Screw 4WD with 3.73 axle and 4.6L and 17" tires. If you have 18" tires, the tow rating drops to 6100 lbs . NOW THAT'S WITH THE TOW PACKAGE, that includes all the fluid coolers. If you do not have the tow package, then your tow rating is only 5000 lbs! You need to find out if you have the tow package or not, then go from there.