Your best bet is to find a donor car from an accident ,this would be far cheaper .then all you do is swap over parts
but finding one in Nigeria could be a bit of a problem ??
Its not that easy like in the older less complicated cars where one could adapted just about any transmission to an engine.
nowadays the engine transmission is managed by computer and has its own programming to run its systems .
No Dona car , you will need to first the ECM /PCM TCM depending on the system this has .
wiring harness ,if all these are bought from a dealer then this is going to become very expensive OR have a good wiring diagram for the two cars and a very good electrician rewire from the diagrams.
ECM going to cost 300 us plus ,then the reprogramming another 100us ,
labour involved in doing this is not going to be a few days
Pedal set 100 - 200 us ,cluster to work with the ECM ,as the one now fitted for the MMT will not work with out rewiring the cluster.
list can go on and on .