@Sarvesh Korde, You can do this setup, but you will need min 2 and max 3 amps if you also want subwoofer later. Or you would need a multichannel sound processor to get these many channels working. For rear channel you will need to split HU output of Rear to Rear Door and Rear co-axial 6x9. In this case you will need a 4 channel for rear 4 speakers (2coax in doors and 2 in tray). Make sure you buy a capacitor or 2 for this much powered setup. You can add capacitor later, no need immediately, will help the amp cope up with the power peak requirements. You could go for 1din 3 pre-out JVC KD-R736BT about Rs. 7.5K in market including bluetooth. But you will need connects2 for steering interface. And blue me function could be compromised. For Stock HU you will need a good quality line convertor or a line-in (input) compatible amp. Blaupunkt makes a VFM 2 channel and one 4 channel amp EMA series check those. Do check better speaker deals on snapdeal etc. --- Double Post Merged, Nov 6, 2015 --- --- Double Post Merged, Nov 6, 2015 --- A prefab sub like this is available for 4k or less online. Could offer sufficient bass.