The Ultra was essentially an upgrade to the Electra Park Avenue line, and featured a standard leather trimmed interior with dual 20 - way power front seats (
shared with Cadillac's restyled 1989 Fleetwood Sixty Special), lower -
body accent exterior paint treatment, distinctive thick - padded vinyl top with limousine - style rear - window surround (available only on Ultra), simulated burled elm trim on the doors and instrument panel, unique aluminum wheels, anti-lock brakes, chromed
B - pillar moldings, specific grille and tail lamps, leather - wrapped steering wheel, electronic instrumentation, padded glove - compartment door, unique interior door panel trim, and a variety of otherwise minor changes.
In stark contrast to 1975 — 76 when it
shared Electra's 127.0 - inch (3,230 mm) wheelbase and used LeSabre's front end styling, the new Estate Wagon
shared LeSabre's
B -
body and used Electra's front - end styling.
The next large rear wheel drive Buick sedan would be the 1992 — 96 Roadmaster,
sharing the same
B -
body as the Chevrolet Caprice and GM's last full - size rear wheel drive station wagons.