the models from its much larger competitors. This was reflected by shuffling the Ambassador models for 1971 and by including more equipment in the standard feature list. The previously nameless base models were dropped, as the sedan-only DPL trim line was relegated to base model status, and a new top-line Brougham trim line was added above mid-line SST models. Both the SST and Brougham versions came as two-door hardtops as well as four-door sedans and station wagons. The DPL came with AMC's new Inline-6 with seven main bearings. All the SSTs and Broughams featured the V8 engine with as standard. BorgWarner's "Shift-Command" automatic transmissions were standard equipment across the line. Two of AMC's were optional; an 8.5:1 compression version with a two-barrel carburetor or a high-compression four-barrel V8 that required premium-fuel. The previous "AMX 390" V8 gave way to a new V8 as the top engine option. Styling changes consisted of a new fascia for the front. It featured headlights contained in their own chrome pods separate from, but flanking the new grille with a bright rectangular surround, with rounded edges. The "natural" cast pot metal grille insert was recessed and featured a bright vertical bar pattern. A second set of parking lights was added outboard of the headlight clusters, and they were integrated into the fender extension to eliminate the need for separate front marker lights. Taillights on hardtop coupes and sedans still ran wall-to-wall, but the twin backup lights were moved from the center to further outboard—approximately eight inches in from either fender side. Once again, the wagon received few changes at the rear, but added a new design for its optional woodgrain side trim, which filled in its upper bodysides. Its lower edge flowed downward aft of its peak at the leading edge above each front wheelhouse, in a similar fashion as the Buick Skylark's side "sweep spear" styling cue. Ambassador base models were offered to fleet buyers with various police, taxicab, and other heavy-duty packages. Governments and police departments in the U.S. historically used standard-size, low-price line four-door sedans. Equipped with the 360 or 401 engines, the base Ambassadors saw use as police cruisers and support vehicles. 1972 Minor changes greeted 1972 Ambassadors, as AMC's biggest news for the year was the addition of the innovative AMC Buyer Protection Plan, which included the industry's first 12-month or bumper-to-bumper warranty. This was the first time an automaker