There were some minor adjustments to safety equipment in October 1973, and the automatic transmissions were dropped in August 1974. This was followed by a second styling tweak in February 1975 when the car gained a honeycomb-style front grille, enough to be labelled the "New Galant GTO" in promotional material. Two-litre GTOs built after this date also gained the "Astron 80" engine with Mitsubishi's "Silent Shaft" system, while the four-speed manual transmission was now only available with the smallest engine. In October 1975 the engines were updated with Mitsubishi's MCA emissions control system with an exhaust gas recirculation valve and a thermal reactor, all to pass the upcoming 1976 emissions standards. The four-speed transmission was discontinued entirely at this time, leaving only five-speed manuals. Power was now for the 1700 SL-5 and for the 2000 SL-5.