How should my duster handle

I actually do agree...people who turn the steering wheel without the car rolling are poor drivers. These are the same people who have cars that break and/or require repairs....my cars never, ever break. I've also never worn out a set of brake pads in under 100K miles.

As for the idea that if you upgrade the tires, you must 'upgrade' the rest of the suspension....that is 'magazine talk' which is founded in the need for their advertisers to sell more stuff.

I have had many old Mopars with 100% stock suspension and modern radials. They drove very well. Sure, you can make other changes but they're not necessary and are often 'downgrades' as much as upgrades. Human nature- along with magazine talk - is to assume any change must be an 'upgrade' if it's shiny and has clever stickers on it. Companies spend more money than you and I have together in studying how to appeal to that side of our brains.

Many parts sold for suspension are pure garbage...polyurethane bushings are at the top of that list but so are a lot of the fancy shocks and springs and sway bars. Too many guys buy a bunch of expensive parts and never bother sorting them out or even finding out if they work well.

I am all for modifying cars....but the mods have to work and work well. If you have an A Body that has mods that actually perform, that's what it's all about. But for every car like that I see 10 that are bolt-on specials.

The 'Gold Standard' of any Mopar suspension is to be 100% fresh and 100% stock. That is the starting point from which all mods are judged. It's a good starting point because, unlike other cars of the era, Mopars rolled out the door with a suspension that still holds its own 60 years later.