Can F16 or F18 gearboxes be mated to a 16SV engine in 1989 Kadett?
No, F16 or F18 gearboxes cannot be mated to a 16SV engine in a 1989 Opel Kadett. The F16 and F18 gearboxes were designed for use with the Ecotec and Twinport engines, which were not available in the 1989 Kadett. The Kadett was available with the 1.3L OHC, 1.6L OHC, and 1.8L OHC engines, which were all mated to the Isuzu F13 gearbox.