Car has the old leaf springs and old air shocks. Idk what parts would be the biggest bang for the buck to get the rear feeling good. Example,, new leaf springs,,,from which company, multi oe style or singles.. Shocks ,,, brand and style. Are coil overs an option or not without doing a lot of work? It is a street car with good hard power and handles like a crow foot bathtub in the ocean during a cat 5 hurricane. The front has old shocks as well. Who has good shocks that don't break the bank? Thanks.

Any help?

This thread should have some useful information:

https://board.moparts.org/ubbthread...handling-mods-and-hints.html#Post3120113

I'd suggest an adjustable 1-2 way shock if affordable, and since we don't know your tire package for street everything is a wild guess.
Resist the temptation initially to add a rear sway bar, that is much later in the process.

How much money do you have to spend?
If you provide a real number for a budget - a parts list can be developed to start the building process.
Without a realistic number this is just a conversation around the campfire.

Also, is this a car for twisty roads, road courses, drag strip, or cruising ?

Lol, I like campfire talk. Great ideas comes from that. I’d like to stay in the 1500 range if possible or less.

The car is mostly driven on curvy country Roads

Given that and the budget mentioned the stock suspension is more than adequate. Tires will be the biggest bang for the bucks.

Some might suggest some sort of "improvement" but if you update the rear without updating the front too then you'll have an "interesting" ride. If you update the front as well you blow the budget.

Figure out what tire would be best, what the budget is for the 4 of them then that will leave whatever is left for the rear suspension. Priority one is getting rid of the air shocks. At this point you will likely have hit your budget limit. Probably go over it if you have 14" rims right now, no "good" tire in the 14" rim size. At least not one that would qualify it as belonging in this forum anyway.