Hedman Husler Helps Shoebox Owners Upgrade To A Modern LS Power Plant Whittier, Calif.  – It’s been almost 60 years since GM debuted the re-designed 1955 Chevy that would spark the Tri-5 movement. To this day, the 1955 to ’57 Shoebox is one of the most desirable classic cars to own. While purists tend to