Better to instal components. if not go for any kenwood speakers. if u go for sony speakers amp lagana parhe ga. kenwood k speaker k sath need nahi.
Secondly, pre kon sa lagaya hua hia? go for the best combination. agar chinese speakers hain ya replica hai. doesnt matter. combination matters, for god quality sound.
Sony k speakers ka ek faida hai apko. sony k speaker kenwood k speaker sey size me thora sa chota hai. hota wo b 6x9 he. using kenwood replica speakers cost 4000 7,8 months hogae. working fine Alhumdilillah. and impressive sound.
Still components wala option zaa bethar lagta hia agar possible ho.
Good luck!!