1.8 Liter OHV 8-Valve Air-Cooled Flat 4
1.7 Liter OHV 8-Valve Air-Cooled Flat 4 Cylinder
1.6 Liter OHV 8-Valve Flat 4 Cylinder
1.6 Liter OHV 8-Valve Air-Cooled Flat 4 Cylinder