How to create a dubbed track with stereo language and 5.1 Original track

Hi,

I have two separate audio tracks for a movie.

1) english 5.1 dts
2) tamil stereo

Can I copy a channel in stereo(with Tamil vocals) and replace the voice(center track) of english 5.1 and create a single 5.1 tamil track ?
If yes, how can I do this ?

I searched this forum and couldn't find the exact one. Can anyone help ?

Thanks