For 1963, the Monterey underwent a substantial revision to its roofline, reintroducing the retractable rear window used by the 1958-1960 Continental model line and the Mercury Turnpike Cruiser. While again using the reverse-slant design, the power-window mechanism was borrowed from the station wagon line. Named "Breezeway", the retractable rear window was standard on all non-convertible Montereys and S-55s. The front grille adopted a sharply-divided concave design, with the six-lens taillamp rear fascia making a return. As a 1963 vehicle, Mercury introduced the Mercury Marauder as a trim package for the Monterey; to better compete in racing, Mercury mated the body of the Monterey with the roofline of the Ford Galaxie hardtop. While technically a Monterey trim package, the Marauder option could be combined with the S-55 trim. The powertrain line underwent a similar revision, as the 223 six and 292 and 352 V8s were dropped, with a 250 hp 390 becoming the standard engine; a 300 hp 390 was offered, along with 385 hp and 405 hp versions of the 406 V8. As a running change during 1963, the 406 was replaced by a 427 cubic-inch V8, in 410 hp and 425 hp outputs (the latter offered only through special order).