Pro touring wheels

I'm not out to discount others posts but.. "It looks good" ? That may be true but there a saying, "A dead man looks good" LOL
"Guarantee it handles better" ? Ask for a money back guarantee.
If you'll google the history of auto tires starting with the Ford Model A you'll learn that handling and ride quality will suffer tremendously where a auto doesn't have the modern suspension components that accompany the low profile tires.
If what your car looks like from the outside means more to you than ride quality inside... Ignore this post.
Good luck

It's true, modern tires with improved compounds need to be matched to the suspension to be truly effective. But modern suspension components aren't needed. Larger torsion bars with increased wheel rates and shocks matched to those bars are all that is necessary for much improved handling. You can go much further than that to improve handling, but even JUST that would be light years ahead of stock.

But even WITHOUT improved wheel rates you'll still get better handling out of modern tires as long as you use modern alignment specs. The tire compounds and design of modern tires will improve traction and reduce sidewall flex regardless of the suspension. Sure, body roll will be a problem, and ride quality won't be as plush as with ancient large profile tires. But you'll only get into MORE body roll if you push beyond where your old tires would have gripped anyway, and I wouldn't agree that the barge like, no-road-feel ride quality of the old tires was good anyway.

Ride quality and performance most often don't go hand in hand.

This is simply a matter of matching components. I run 1.12" torsion bars on my Duster, which works out to a 300 lb/in wheel rate. I run Bilstein shocks to keep those bars in check. It's ride quality is very similar to my g/f's 2013 Mustang with the factory "premium" suspension. Performance is so much improved its not even funny. No, it doesn't ride like stock, but that's a good thing.