Hemi bars will be a big improvement from what you have today. If you have the bars go ahead and put them in and drive it to see what you think. If you don't have the bars then you might want to go even thicker. For a daily driver street car I'd probably put the 0.960 bars in there if you can find them or go one size bigger. Once you get over 1 inch you'll want to invest in a very good quality shock absorber such as Koni or Bilstein. Do not use cheap shocks with big bars. Your teeth will fall out when you hit a bump.