Gearbox Problem ( Help me ! )

Dear Friends.

To upgrade my Car (Mitsubishi Galant 7G 1993) I have bought a 6A12TT(Twin Turbo) Engine with a AWD Gearbox (W5M33)

the previous engine was a 6A12 with an automatic FWD gearbox (F4A23)

Now I have a problem for which I need your Help:

How can I change the System on the AWD gearbox and make it functional as a FWD gearbox

If I want to change the system of the car and make it into an AWD , I need a rear axel and any other parts to do the same , How can I purchase these parts and from where ? Is this experiment possible?

Option 1:

https://www.thegalantcenter.org/showthread.php?t=39610

Its not very good for daily driving. If you just install the AWS tranny e/o the rear end components itll blow up cuz there will be no load to the rear. The tranny will try to keep the 50-50% front-rear ration and transfer most of the power to the rear thinking its constantly slippin....and.....BOOM, Some people weld the center differential and stuff, but IDK.

option 2

https://www.thegalantcenter.org/showthread.php?t=34981

You need either 7g VR4 or 2g GSX (manual trans) rear end, transfer case, drive shaft

Thank you for reply :)