https://www.ebay.com.au/itm/123794740810 comes with reverse camera (buy an aerpro adaptor kit to suit the car it's going into so the head unit is click in the wiring and screw in the deck)
https://www.ebay.com.au/itm/133177936622 blast from the past (build your own MDF box)
https://www.ebay.com.au/itm/274016669134 plenty of power for that sub, as long as habib doesn't fuck around with the gains and you keep airflow in mind so it doesn't cook
Decent wiring, fuses, terminals and capacitor are a must.
A decent set of splits and maybe an amp to help them along and the neighbours will hate you.
Add Dynamat sound deadening on the doors for better sound quality and bass from the splits.
You can wait and find better spec'd equipment to build up something more serious, as I'm doing.
DD 9915 15' sub in custom Doran Audio box
DD D1b 5.5kw capable monoblock
Hertz Mille splits
Hertz 4 way amp to power them
Pioneer head unit
Dynamat sound dampening material and installation tape.
All of above cost less than the D1b would of cost new back in the day.
Awaiting a decently priced Audison sound processor, a capacitor and figure out which wiring/terminals/accessories to use.
Once done, I should have a system that pushes out 140-150db and with impressive sound quality to boot.