Hard tops are near impossible to come by in Malaysia. If any has one, they would hang on to it and of any one's selling their car equipped with a hard top, the new buyer would want the hard top with it.
Your chances are overseas. Japan, UK or US.
Beware of the following 3 things:
1. If your car is not equipped with a hard top readiness kit, you might need to invest in one.
2. The hard top is expensive even used. It is in the teens.
3. It can break during shipment if not packed extra well.
Good luck.