Hi-fi upgrade in F56 Mini - is it possible?

[thenortherner]

I'm about to purchase a 2016 Mini Cooper S with only the basic 'radio boost' setup, i.e. the most basic of setups, with no large LCD screen, and I think only 4 speakers (2x door and 2x rear passenger?).

I'm not too bothered about the asthetics but I'm keen on decent sound. The basic setup is pretty awful. Would it be possible to stick some under-seat subs, upgrade the speakers and install an amplifier using the existing screen?

Here's what it looks like:

https://www.ebay.co.uk/itm/284909726436

Do the photos show it has aux. out so an amplifier can be installed?

Thanks in advance.

Edited by thenortherner on Sunday 15th January 20:02