This car is just like any other 1982-1983 Toyota Corolla.
Converting it to stick shift is very easy and cheap.
you'll have to source out
1, paddle assembly (junk yard or ebay)
2, Manual Trasnmission (junk yard or ebay)
3, Clutch for it. (auto parts store)
4, Clutch mater (auto parts store)
5, Clutch lines (auto parts store)
Good luck