omg!!! there are huge differnces with the mx and dt 175, i have both the mx and dt 175 both of them are 1982 and youcan tell a differnce in them by just hearing them runn... my mx is a 25hp and blows the dt away, i first got the dt and thought it had some power, but resently i bought the mx and when i started it up you could hear the differnce it rained power, when i poped the clutch into second gear i was doing upright wheelie´s but on the dt i have to get it in third and almost stall it out then rev it to do a wheelie, and other bigg difference is that one is enduro and the other is moto-cross witch means the pistons on the mx and bored out more and bigg than the dt,,,,,.........there are alot more didderneces between the two, they look alot alike but are completely different in the engine