Hyundai Repair: xg 300 hyundai trasmmission, output speed, input and output

Question
if i  buy the complete trasmissiom (i mean gear box)will the input and output speed sesnsor come with it

Answer
If you get the correct transmission, yes.  I don't know what particular transmissions are available on this car in Nigeria, so purchasing a transmission for a Nigerian car won't necessarily get you the sensors you need.  If it did, you should readily be able to find the sensors separately.

You should perhaps investigate a different solution, such as purchasing online through a U.S. dealer that offers such purchases, or through a U.S. online parts house.  You may even be able to pay and order over the phone and have them ship the items to you.