You can go with a bigger bar if you use a good shock. The Edelbrock shock is not a good shock so if you stick with those shocks then you should stay with a stock size bar. If you use a good shock (Koni or Bilstein) then you can use a larger bar and still have a nice ride. I have a 1.06 bar in my Coronet with Koni shocks and a 1.25 anti-sway bar and it is a very nice ride. It absorbs the small bumps but doesn't sway in the corners or float down the road. It is a modern feeling ride rather than a 60's feeling.