[pgnavy]

Thanks guys, I will keep it at the #3/7 location. Here are the measurements: using the #3 and #7 pictured holes.
Top of bumper to bed (looking down from top of bed) - 1 3/8"
Passenger side bumper to rear fender (sorry for the sideways photo) - 1"

Finishing up an entire new bed...wood, bedsides, tailgate, fenders, cross brackets, fasteners, fender welt ...bought Mar K parts. All good.