The hard part is finding the center mark for the two that go from side to side IMO.
Then you need to look in the front storage area and make sure you will not drill thru anything.
Bolt it all up (loose) and then move to one side or the other measure, drill and bolt.
Once everything is bolted tighten every on down good.
Read the directions, then read them again until you are sure.
If you go with a step bit do be careful as I find it easy sometimes to over drill the hole.
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping