1971 Pontiac Grand Prix SJ. The GP received some significant design changes for 1971. The most notable included single headlights that replaced the previous dual-style treatment, a new decklid with pronounced boat-tail styling, and new bumpers front and rear. Interior changes were limited, but the same overall theme was retained. For 1971, the SJ package retailed for $195 and again included such items as the 455 four-barrel engine, Rally gauges, custom lamp group, and specific SJ identification. There were, however, a few new features in the package such as vinyl accent stripes, body-colored sport mirrors, and the Delco X battery-a high-tech unit that was completely sealed and required no periodic maintenance while offering higher power reserves. Paint , transmission and engine are all in excellent order.