Just got myself a 68 Barracuda Fastback!

Yes it is manual steering. I plan on doing some front end work as well. Any suggestions on where to get a rebuild kit?

What I've always done is go with all polygraphite upper control arm, lower control arm and sway bar bushings.
energysuspension.com | Welcome
PST | Car & Truck Suspension Parts | Performance Suspension
I do use polygraphite lower control arm bushings for years and many miles with no problems.
However, I use rubber for the strut rod busings.
I didn't like the fact the polygrahite has no give.
I like to compress that bushing a little when installed.

I buy my Moog hard parts locally if possible.
That way when the lower ball joints, upper ball joints and tie rod ends show up at the parts counter, I can look them over and be sure they are made in USA if still possible.
Seems like I did by my lower ball joints on the internet last time.
Maybe from Amazon.

I would also suggest taking time to clean out the cowl..... if it has leaves in it especially.
I've actually used a small hole saw to make access in the front of the cowl and a body plug to close it afterwards.
Air hose and shop vac.
Get the leaves out. Then spray Rustoleum Rusty metal primer all up in there.
Cowls are a rusting time bomb.