delta88The 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 hardtop1978 Delta 88,Beutifull Car In Orinal Condition 39000 Miles Other Oldsmobile classic cars for sale. Image. Title. Year. Engine. Mileage. TM. Location. 1978 Oldsmobile Delta 88