HEAD UNIT Well, for a new HU, do make sure that it has 3 RCA pre-outs. That will make it future proof if you intend to add a subwoofer system in future. For a decent budget, look at these Head Units from JBL: http://www.indiajbl.com/CarAudioProduct/20101221102955368532255.pdf This website lists the price t Rs3290/- 2 years warranty Car Audio Multimedia Head Unit USB, SD Card, AM/FM Tuner The IndiaJBL site is not working (under maintenance) but these pdf links are still working. FRONT SPEAKERS I would advise you to audition a few speakers and check which ones suits your requirements. I would advise against an external amplifier at this stage and it would be better to buy component speakers for front doors in the budget of Rs4500-6000. Make sure that the speakers you buy are 4 ohm speakers preferably. There are many good brands you can try: JBL, Rockford Fosgate, Hertz etc. Size: 6.5 inch. REAR SPEAKERS For rear speakers, co-axials are good. Buy any 6.5 inch co-axials in the range of Rs2500-3500. Brands are again the same. Total budget: Rs 12000-14000 approx. This saves you a lot for getting the front doors damped with material like dynamat or dampmat. Damping cost is approx Rs1500-2500 (variable) per door depending upon the amount of damping done. A good damping is like a good SPMS of an assembled PC. Its one of the most ignored aspect of a car's ICEing.