If springs aren’t broken or totally sacked out, you can rebush them and replace shackles on the one end and the pivot bolt-pin thingee at the other end. That would be a logical place to start. Springs can be rearched and rebuilt, but the charge for that in my area makes it impractical vs purchasing new.
Cab mounts, engine mounts, and core support mounts are all candidates for replacement. I need to do all of those on my truck. I’ve rebuilt or replaced all the suspension stuff over the past couple years.
