This tire vs. this tire...

Actually, some would argue that tires are the single biggest upgrade you can make for handling.

Very true but to a point. You just aren't going to get the full potential of those tires on a stock suspension mopar from the 70's. BUT, I did check them out on Tire Rack's web page and they are very reasonably priced so if they have a size that's fits what you are trying to do then why not.

I would recommend reading the Tire Rack reviews on them. Seems some of the reviews say the Dunlap is scary on wet roads.