Sharing its name with the car, the 290-hp engine was offered as an option across the rest of the Mercury line. For 1958, two all-new "Marauder" engines were introduced. The standard engine (shared with the Montclair and Colony Park) was a 383 cubic-inch V8, producing 330 hp. A 430 cubic-inch version (shared with the Park Lane) produced 360 hp. As a special order option, a triple-two barrel carburetor "Super Marauder" version of the 430 V8 produced 400 hp. Exclusive to Mercury, the Super Marauder was the first factory-produced engine with a 400 hp output as a response to the 1957 Chrysler 300C. All Turnpike Cruiser engines were paired with a 3-speed "Merc-O-Matic" automatic. For 1957, Mercury offered mechanically activated pushbutton transmission controls in response to the Chrysler TorqueFlite pushbutton controls introduced in 1956. The Mercury control buttons initially offered five buttons and was called "Keyboard Control", with a long button on top labeled "Drive" with four smaller buttons below labeled "Brake", "Neutral Start" which would allow the engine to start with the ignition key, "Hill Control" and "Reverse" with later versions separating the "Drive" button to "Performance" and "Cruising" for 1958 and relabeled as "Multi-Drive". A separate push/pull lever was included below the control buttons labeled "Park" which would lock out the control buttons until the Park button was pulled to release it. The control panel was installed to the left of the steering wheel. In 1959 the keyboard control was discontinued and used a steering column gear selector lever. Body During its production, the Turnpike Cruiser was offered as a two-door and four-door hardtop. To serve as the pace car for the 1957 Indianapolis 500, a convertible was created (named the Convertible Cruiser), leading Mercury to offer a version for sale. Effectively one of the first replica pace cars, the Convertible Cruiser was offered in a single yellow (Sun Glitter) exterior color and were fitted with the optional continental tire kit. The installation of a hood ornament had become commonplace during this time, and the Turnpike Cruiser was no exception. However, Mercury also installed one outside and at the base of the rear window for 1957, then relocated it inside next to the rear window where it would light up if the exterior lights were on and did not serve the function of a third brake light. While sharing much of its body with the Montclair, the Turnpike Cruiser