I would like to know what to buy and where to buy the stuff to make my 69 camaro ride and handle like a modern sports car.

do a search in suspensions... then spend a few hours reading at http://www.pozziracing.com.
Then... do the guldstrand mod. Replace all the wear parts, use poly or del-a-lum bushings, springs of your choice, hotchkiss or addco sway bar, koni, bilstein, or kyb shock, brake upgrade, third gen camaro steering box, and modern 16 or 17" rubber

Swap for an aftermarket front subframe/suspension.
Fabricate in a Corvette IRS or the new AirRide system.
You'll need to own a finacial institution first though. ;)

If you want to become "hard core", then hang out over at Larry C's great Pro-Touring site!

pdq67