Well after much internal debate on which rear swing arm to get, Calmini or Shrock, I have added the Shrockworks bumper to my order.
I prefer Calmini's design with the tire being centered, but Jim's Hi-lift jack mount and great customer service won me over.....well that and the discount since I had just ordered the front bumper last week.

Uggghhh...now I gotta write the check to pay my visa bill.