Only really needs to be greased and the master cylinder rebuilt or replaced. Wound up going with electric for expediency.
Also have a pair of laser cut brackets that put 2x 99-04 Superduty calipers on a single 4.5" tube (10-12k trailer axle) that I'd let go at cost if you're interested.
Txt please, I don't pick up for numbers that aren't in my contacts.