Need suspension work

Pishta, the problem I have just started this past week as I was coming down a hill and off the freeway. The front end started to shake at around 45mph. On another note the car sits extremely well without sagging at any point. As I said before, this vehicle has all urethane bushings and the sway bar runs through the K frame and outside of the bushings, the sway bar couldn't be any stiffer. I feel the need to upgrade the braking system as well as the metal parts of the suspension and will go to graphite urethane bushings if I need too. I'm asking which companies offer either a kit for the brakes along with a suspension package minus the front sway bar. The car is tight with welded on frame connectors and has always driven well BUT, I haven't driven it in the past eight years until early this year after an engine transplant. I could answer most any question in regards to my car even though I first built it in 1990. It basically had everything I needed to do back then including the front disc brakes. Thanks again..