Going with Duster 1.3 Iconic stealth Black

Test drove almost many cars; Tata punch Ev, BE 6, seltos, Taigun Kylaq, etc. but finally settled with Duster.

1. Driving and handling is amazing

2. AC is decent for banglore weather. good enough for me

3. Audio system is ok. I hope can upgrade it without voiding warranty

4. 2nd row is good for me our family all are 5.6 to 5.8 we all fit very comfortably.

5. looks and road presence are amazing.

6. Eats up banglore patholes very well. in test drive i dint notice the speed bump and flew it at 30kmph which i felt bad but car took it like a champ and i was sold there.

7. Overall happy with it. Not taken delivery but in 15 days will get it.

My question is about PDI can it be done after invoicing is completed or before? and any ideas on speakers/sub upgrades with amp+dsp? I am thinking Audison voce 2 (not decided anything yet).