hey i have a dt175 80 model trying to bring it back 2 new i have seen that they are ment to have a 6 speed grear box i only have a 5 and so does my mates dad who has had his since new ( 81 model ) does this mean its not the dt gear box ? im all so looking for a full light kit tail light head the lot i still got all the wiring would sell hole bike if the price was rite not i dont get a good offer there is not change of selling it hope 2 finish doing it up but end of next month plz get back to me about the gear box asap or if any 1 has lights 4 sale