Buy 6 new cage nuts for the front spring pockets, good chance you'll have to cut yours off as they tend to spin from the backside and you have no access to hold the nuts to prevent it. Also buy new spring pads and new shackle bushings. Those are all pretty much on the mandatory list.

On the "maybe" list depending on condition of your car: new shackle bolts/nuts for rear, front eye bolts/nuts, plus t-bolts and u-bolts/nuts at the axle...those all depend entirely on the condition of yours, how much rust you have, and how cleanly they remove. You might be able to re-use your bolts and hardware if it's not a rusty car.

Here's something that might scare the bejeepers outta ya: My rear spring replacement (in 2002) led me to a full frame rail replacement...which in turn led to a full blown restoration that took me the better part of a decade for multitude of reasons. The car is now finally back on the road...

I do not wish that on you. Mine was indeed a basket case, worse than most. If your car is not rusty, it's just a weekend project.