In South Africa we had the opel astra/kadett 200ts it was a 2.0l 16v turbo with a fwd F28 6speed gearbox, in Europe they had the 4wd F28 gearbox. The F28 we have here also came with a limited slip diff. these are very scares and expensive here.

the f10, f13, f15, f17, f16, f18, f20 are all freely available here the most popular one to use is the f20 as it is one of the strongest we have, although people brake them all the time. We also have a f23 and then the m32 from the opel astra opc(vxr).