Welcome to ACVWSA!
You are probably referring to the 1600S model - yes, they were indeed unique to South Africa. Had a curved windscreen like the 1303 in Europe, but no IRS, disk brakes, Machperson suspension and 4-stud wheels and several other design differences
Does your spare wheel sit almost vertical, with a slight angle, or horisontal in the front? Does it look like this?
The 1302 was never manufactured or sold in South Africa - it had all the features of the 1303, but a flat windscreen, like the pic below:
From Wikiyouknowhat
The Super Beetle and final evolution
VW 1303 (1973)In 1971, alongside continued production of the "standard" Beetle, a Type 1 variant which featured MacPherson strut front suspension and a redesigned front end. Officially known (and marketed in Europe) as the VW 1302 from 1971 to 1972, and VW 1303 from 1973 onwards, but commonly called Super Beetle, the new stretched nose design replaced the dual parallel torsion bar beams which had compromised trunk space and relocated the spare tire from a near vertical to a low horizontal position. The redesign resulted in a tighter turning radius despite a 20 mm (0.79 in) longer wheelbase, and a doubling of the front compartment's cargo volume. As with previous models, air pressure from the spare tire pressurized the windshield washer canister, in lieu of an electric pump.
1972 Super Beetles had an 11% larger rear window (4 mm (0.16 in) taller), larger front brakes, four rows of vents (versus two rows previously) on the engine deck lid, tail lights incorporating reverse lights, a four-spoke energy-absorbing steering wheel and steering column, and an engine compartment socket for a proprietary VW Diagnosis system.
In 1973, the VW 1303 introduced a curved windscreen, pushed forward and away from the passengers, allowing a redesigned, padded dashboard to replace the pre-1973 vertical dash. A two-speed heater fan, higher rear mudguards, and larger tail lights were added. The changes to the heater/windshield wiper housing and curved windshield resulted in slight redesign of the front hood, making the 1971 and 1972 Super Beetle hoods unique.
For 1974, the previous flat steel bumper mounting brackets were replaced with tubular "self restoring energy absorbing" attachments, effectively shock absorbers for the bumpers, on North American market Beetles. These cars also got stronger "5 mph" bumpers that added an inch to the length of the car. The steering knuckle and consequently the lower attachment point of the strut was redesigned to improve handling and stability in the event of a tire blowout. This means struts from pre-1974 Super Beetles are not interchangeable with 1974–79s.[39]
1975 models featured Air Flow Control (AFC) Fuel Injection on U.S., Canadian, and Japanese Beetles, a derivative of the more complex Bosch fuel injection system used in the Volkswagen Type III – and equivalent to Bosch L-jetronic. The fuel-injected engine also received a new muffler and the option of an upstream catalytic converter required on some models (e.g. California), necessitating a bulge in the rear apron sheet metal directly under the rear bumper, and replacing the distinctive dual "pea shooter" pipes with a single offset tailpipe – making fuel-injected models identifiable at a glance. Other changes were rack and pinion steering replacing the traditional worm and roller gearbox on Super Beetles, and a larger license plate lamp housing below the engine lid. The front turn indicators were moved from the top of the fenders into the bumper bars on European models.
In 1976, the optional "Auto-stick" transmission and the Super Beetle sedan were discontinued, with VW continuing to market the standard sedan and VW 1303 convertible. 1976-on convertibles received no significant engineering changes, only a few cosmetic touches and new paint options, including the "Champagne Edition" models (white on white was one example) to the final 1979 "Epilogue Edition" black on black, in salute to the first Beetles produced in the 1930s. 1977 model sedans received front seats with separate head restraints.
