Raising/lowering pin box and/or raising/lowering hitch is one method of making adjustments to gain bedrail clearance.
Just be aware that it can also lead to nose high towing of 5vr.
Then you get into having to raise 5vr (axle flips, suspension lifts etc.) so it tows level.
Wish dang truck mfg. would quit messing with truck heights.
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31