The Imperial automobiles continued to be retailed through Chrysler dealerships. A distinct marketing channel was not established; thus, the Imperial nameplate failed to separate itself from the other Chrysler models and become a stand-alone marque. Beginning in 1967, the Imperial Division, offering three ranges (Custom, Crown, and LeBaron), retreated from their separate body-on-frame construction and their unique body on a 129.5-inch wheelbase. From that time, Imperials used the Chrysler body. It was fitted with unique styling, and through 1973, very long hoods which accounted for the three-inch-longer (127 vs. 124") wheelbase as compared to other Chrysler sedans. They continued to use their unique front suspension with torsion bars longer than all other Chrysler products and a rubber-isolated subframe crossmember containing the torsion bar anchors, as well as full instrumentation backed up by warning lights. In 1974 and 1975, separate brochures were published and separate Imperial signs still stood above the dealerships, and the Imperial continued to feature unique features (such as hidden headlights as featured since 1969, optional antilock brakes as offered since 1971, and standard four-wheel disc brakes in both 1974 and 1975), the wheelbase was reduced to the same 124" as other big Chryslers.