1974 GMC Trucks Rally Wagon Sales Folder. Rally...with Big Comfort and Performance. The Great Crowd Pleaser. If you have trouble getting everybody together under one roof, that's a sign you need a Rally Wagon or Rally STX model. Be it a bunch of begonia fanciers, the local small fry heading for a sandlot game, or your adventurous tribe off on a weekend, one of GMC's Rally models could spell the difference between cramped and comfortable Goes on to highlight other features, safety features, and power train options. Very good condition. ADV 74-5 (8-73)