Buick Electra 225
The year 1969 also brought a major restyling to the Electra 225 and other GM B- and C-body cars with somewhat crisper bodylines than 1965-68 models, but continued with the same chassis and inner body structure introduced with the 1965 model, along with the 126-inch (3,200 mm) wheelbase. The 1969s were also the first to offer headrests as standard equipment due to a federal safety mandate, and the steering column with ignition switch that also locked the steering wheel with the transmission in "Park", a feature found on all 1969 GM cars one year before it became a federal safety mandate in 1970.
Also new was a variable-ratio power steering system combined with revised front suspension tuning called "Accu-Drive."
Other changes included ventless front windows and the elimination of rear fender skirts. The same assortment of base and Custom models were offered in 1969 with the "Limited" trim package available on Custom sedans and coupes. A new option available with the Limited package was a split 60/40 bench seat with center armrest.
Only a minor facelift with revised grille and taillight trim marked the 1970 Electra 225. The big news was under the hood, where a new 370-horsepower 455 cubic-inch V8 replaced the 430 V8 used from 1967 to 1969. This was the final year for the Electra convertible, finned aluminum brake drums and high compression engines. Wheelbase increased by one inch to 127 inches (3,200 mm). New this year was a concealed radio antenna, which amounted to two wires embedded in the windshield.
New for 1970 was the Estate Wagon, which shared the Electra's 127-inch (3,200 mm) wheelbase and 455 V8, but was technically a B-body car like the LeSabre and Wildcat. This was Buick's first full-sized station wagon since 1964.
Source: Wikipedia, 2011