CUCV titling info
You need the bill of sale from Uncle Sam to G.L., the bill of sale from G.L. to you, and the SF-97 from Uncle Sam to G.L., and possibly a SF-97 reassignment form but that depends on your state.
Even though you are actually buying the truck, the truck is sold on paper to G.L. when you are the winning bidder. The SF-97 and bill of sale from Uncle Sam are listed as G.L. being the 2nd owner. Then G.L. gives you the original forms with a reassignment form and bill of sale from them (G.L.) to you.
Hope this helps. When you do the SF-97 request, you will get all the forms that Illinois requires unless they goof it up.
Jim
PS: If a particular county requires something else, you may want to explain this to G.L. in a live chat session so they understand teh request qhen you send it in. Trying to get additionaly paperwork after the first batch is something like an "act of congress" and we all know how that works!