Here are three stocks with buy ranks and strong growth characteristics for investors to consider today, March 8: Powell Industries, Inc. (POWL) : This custom equipment manufacturer has seen the Zacks Consensus Estimate for its current year earnings increasing 44.2% over the last 60 days. Powell Industries has a PEG ratio of 1.53 comparedwith 1.64 for the industry. The company possesses a Growth Score of A. Cardinal Health, Inc. (CAH) : This healthcare services and products company carries a Zacks Rank #1, a ...