hitch or spray liner first?

xaugievike wrote:
in a perfect world, is it better to have a 5'er hitch installed before or after a spray-in liner?

If it matters - it would be for a BW companion hitch.

My vote is for the liner spray AFTER the holes are cut but BEFORE the hitch is installed.
Cut edges get sealed that way.
Worked with my Superglide, but then I do not have rails bolted to the bed, my hitch sits on the pins mounted to the underbed brackets. My hitch does not touch the bed sheet metal.