Salam
Car stock speakers are good. You only need sound insulation in car doors.
I will recommend Trent black foam sound sheets from (Entertainment on Wheels Rashid sb)
Because they are lighter and will not make your door heavier.
The biggest problem in Toyota corolla is its Head unit which although wriiten on it that it is of Alpine but Alpine has nothing to do with it.
Agar Alpine walon ko bataya jaye to woh Toyota indus pe Kafi bara hargana (case karsakte hain)