What suspension upgrades should i do for $1200 big block dart

I have a 68 big block Dart. I wanted to keep things close to stock and easy to change back to OE. I run a set of Bilstienshock, a Firm Feel front sway bar, Urathane bushings front and rear and 15" wheels and tires. Car rides nice and handles great.
Thats the kind of simple but nice combo im looking for