Carl:
The retrofit for the parking light sockets is super easy.
If Dr D or ILUVMILS doesn't respond sometime this weekend, I can probably try to get some info for you locally on Monday.
I can at least get the part number, and inquire if this is a campaign or not and if it is eleigible to be done on second-owner vehicles. Worst case scenario is you go buy the update kit at the dealer and install it yourself.

Gilly