This has been my dream for some time...I have some posts that discuss it here.
Most of my real elaborate posts are over on the 323 performance forum.
In short though, its a super-drastic modification that would require cutting up every part of the chassis of the car.
Finding a donor GTX is damned near impossible, and cutting up a good one is sacrilege.
You'll need: Borrowed rear suspension from another car, cut and welded in
Borrowed front supspension/steering from another car, hybridized with stock setup, tuned to prevent bump-steer issues, cut & welded in
Drive tunnel either custom fabbed or borrow from a donor vehicle, cut & welded in
The engine managment all has to change, as well as the braking, steering, and pedal system
Not gunna be a cheap project.