Original Track bar configuration

I'm about to replace my track bar relocation bracket and factory bar with the RE HD bracket and adjustable bar. You are supposed to use the factory attachment on the axle end, but I have forgotten what that is. Is it just a bolt, or is it sleeved???

its just a bolt thru to the fancy nut-with-a-tab thing.. (yes thats a technical term) the trackbar bushing will already have a steel sleeve/bushing in it... i had to get a new bolt because the old one was worn enough that it had a small amount of movement and the trackbar would "click" as it was worked back and forth..