delta88Both base Delta 88 and Royale models were now only offered in two pillared body styles; a two-door coupe and a four-door Town Sedan. The 1977–1979 Custom Cruiser was now based on the Delta 88's B-body rather than the NinetySpecs datasheet with technical data and performance data plus an analysis of the direct market competition of Oldsmobile Delta 88 Custom Holiday Coupe Rocket 455 V-8 310 hp in 1968