Good question. I don't remember ever seeing one at least from us.
Probably one of those things that might vary a little bit by body lift height too. Guess you're just expected to watch it come up, drill a hole where it's going to land, then use the boot and retainer as your template.
Kind of like the fender flares. Use the flare as the template, but with leeway to move around as befits your particular Bronco.
That's the cop-out version though. I'm sure someone has gone to the trouble of creating a template by now.
Good luck.
Paul