Question sa mga audio gurus here. My car is a suzuki jimny. I want to upgrade the stock speakers. 4" speakers and front lang meron. I plan to replace the front speakers and add rear speakers (meron ng wire provision). I have inquired in several audio shops. Laging recommended sa akin is to replace the front speakers to coax speakers daw. Do i really need the tweeters? And gusto nung isang audio shop butasan door cards and doon lagay speakers. Stock location is at the bottom of the dashboard.