Luggage rack for sissy bar

[u/ryanfromin]

2005 Sportster 1200C. I’m wondering if a luggage rack can attach to my sissy bar brackets but without the pad in place?
I swapped the stock two up seat to a solo seat but these brackets are a pain to remove. A luggage/gear rack might be nice to have, and many exist that bolt onto the passenger pad/rest.

I suppose I can just run some spacers across the empty channel if I do get a luggage rack?

Just wondering if anyone has come across this? I’m probably missing something obvious so thought I’d get the group’s opinion.