OK sou you would need to find a box, clutch pedal and brake pedals, linkages and maybe the cv joints. Guess that would mean sourcing a manual wreck or front cut else you will be chasing parts forever...
I would say you wouldn't get much change from 3 or 4 grand, and most of that will be on the parts.
Dunno how attached to your car you are but it might be easier just to trade/sell it and buy a manual.