Hey bro! If you are looking for an SQ build you can get the following things installed for your In-Car entertainment
Speakers:
2x pair MTX Audio CTC 160 Component car speakers (with custom fabricated door pillars for the tweeters
Rs.28k (14k for 1 pair)
Or
1xpair MTX Audio CTC 160 (for front)
Rs.14k
+
1xpair Pioneer TS-1686S Coaxial (for rear)
Rs. 9k
Total: 23k
Subwoofer:
Focal P30F (If you are willing to give up trunk space for a closed SQ sub enclosure, and if you want an SPL build then go for a ported box)
Price: 25k
Or
Pioneer Under Seat Subwoofer TS-WX120A (Has a built-in amp and can be space saver as it can be easily installed under the passenger seat)
Rs.22k
Headunit:
Pioneer DEH-S5150BT Unit (1 Din)
Price:19k
Amplifier:
Blaupunkt 1500 Watt 4 Ch amplifier (Can be imported online easily)
Rs.24k
Or
Blaupunkt 750W 2-Ch Amp (If using an active under seat subwoofer)
Rs. 20k
Total: 96k (If you go for no.1 options I gave earlier)
Cons of this system:
1. Headunit is single din non-Android. If you can go outside your budget you can install a Pioneer 2 Din head unit. My option given above is because of your budget. (Suggested ones are:
a) Pioneer AVH-XL5750 BT (Rs.40k)
b) Pioneer AVH- X2650 BT (Rs.42k)
c) Pioneer AVH-595BT (Rs. 35k)
2. If you go for components in both front and rear speakers you will have to a) do a bit of an extra wiring for the crossovers (b) get custom fabricated fibre pillars for installation of the tweeters.
Do tell which car you are planning to install these on.