Swingaway on Waggy ??

[theyeti1775]

Saw this over on IFSJA site, someone was selling for $125 in WVa.
Was wondering how hard it would be to add a swingaway onto my existing bumper?
Pictures of both below.
Swingaway:





Picture of my current rear:

[BucketOKarma]

As long as the bumper you have is solid, have the materials, and you either have the skills, or know someone that does, adding a swing-away should be a snap.