Some of the differences between the 98 and 88's:
WHEELBASE 98 weelbase is 126.3 inches and overall lenght is 220.9 inches for ALL bodies (convertible, coupe, holiday and celebrity sedan)
88's weelbase is 123 inches and overall length is 217.6 inches for all bodies too. The Fiesta (wagon) is not longer than the other model.
EQUIPMENT On 98 jetaway transmission is standard as power steering, power brakes, 2 ways electric fore and aft front seat adjuster (4 and 6 ways optional), electric 4 window lifts (but for the post sedan: optional),glove compartment lamp, windshield washer, electric clock, rear seat center harm rest on holiday sport sedan (not available on other body but for the post sedan at extra cost), larger sun visors, special deep twist carpeting, bright aluminium front seat-back side panels (like Cadillac but Cadillac ones were in heavier chromed metal, not alu.), more luxurious interior (a bit of leather on seats, larger and "luxury" ashtrays with 4 cigar lighters on coupe and 3 in the holiday sedan) and exterior appointment (extra aluminium mouldings on the body).
EXTERIORThe headlamp bezel were made in aluminium on the dynamic and super 88 but were made of chromed metal on 98. The rear aluminium panels aren't the same for 98 and 88's: on 98 there were more grooves with black paint. On 88's no black paint and less groove.
The lower rear panel is painted body color on 88's and fully chromed on 98.
Tail light bezels are the same for super 88 and 98, the dynamic ones were plain without an horizontal chromed bar.
Rocket emblem between headlamp for super 88 and 98, and numeral "88" for the dynamic.
ENGINE & TRANSMISSION
98 and super 88 equiped with 394 ci/315 hp 9.75 to 1 compression ratio (4 barrel carb) and 88 equiped with 371ci/240hp 8.75 to 1 comp. ratio (2 barrel carb) or 260hp optional.
trans is the same for 88, Super 88 and 98.
1960 Oldsmobile super 88 sceni coupe
1960 Olds 98 holiday sedan