I have a 2013 Ford F250 Lariat FX4 Supercab 6.2 engine, I tow a 30 ft travel trailer about 2 month a year, the question I have is when hooking up the trailer the truck squats. The shocks on the truck are factory Ranchos. I am looking at the Bilstein and or ProComps for replacement. Any suggestions as to ones to use and what to do about the squatting issue.