delta88Oldsmobile Delta 88 LS 5.7 Diesel V8 OD (aut. 4) , model year 1984, version for North America special edition (since February) (up to October): manufactured by Oldsmobile in United StatesThe Delta 88 remained the top trim level, but it was divided into the standard Delta 88 and the upscale Delta 88 Custom. The Custom was available only in two- or four-door hardtop