Yes, with the right parts. Here's the rest of what I bought:

• Removal Tool https://www.amazon.com/gp/product/B0007TC9LW
• DIN faceplate https://www.amazon.com/gp/product/B00829TVME
• Harnass Adapter https://www.amazon.com/gp/product/B085VDR7BT
• Steering Wheel Controls https://www.amazon.com/gp/product/B00B4PJC9K
• Antenna Adapter https://www.amazon.com/gp/product/B0007WW64Y
  • My reception sucks, this may not have been the right adapter. I don't use the radio, so I just didn't care.
• USB ports for auto https://www.amazon.com/gp/product/B01MY1WDIU
  • I pulled the in-glove-box OEM USB ports, and just shoved this round peg literally into their square hole. It more-or-less just fit. I hooked these up to the new receiver's USB-in and charge ports

You will need a harness, dash kit, and radio adapter

https://www.amazon.com/CACH%C3%89-KIT593-Bundle-Stereo-Installation/dp/B07VLJB3TW

You will also need adapters for steering wheel controls, usb port, and factory backup cam retention

https://www.amazon.com/Axxess-ASWC-1-Universal-Steering-Interface/dp/B00B4PJC9K/ref=asc_df_B00B4PJC9K/?tag=hyprod-20&linkCode=df0&hvadid=241970631835&hvpos=&hvnetw=g&hvrand=11366985332957004907&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9010778&hvtargid=pla-343408299292&psc=1

https://www.bestbuy.com/site/axxess-4-pin-oe-usb-retention-adapter-for-select-2012-2013-toyota-vehicles-black-gray/9616715.p?skuId=9616715

https://www.bestbuy.com/site/axxess-wiring-harness-for-select-scion-and-toyota-vehicles-black/5803724.p?skuId=5803724&ref=17&loc=11&CampaignID=1106599&SubscriberID=639888744

By the way, that BOSS unit will prob work better than any of those 10” displays…

What aftermarket stereo you pick doesn't matter too much. You will want adapters to connect the factory harness to the radio, and another adapter to retain steering wheel controls.

Just to give you a rough idea, here's what I bought for myself (US)

1. Harness adapter https://www.amazon.com/gp/product/B085VDR7BT/
2. Steering wheel controls https://www.amazon.com/gp/product/B00B4PJC9K
3. Single Din https://www.amazon.com/gp/product/B00829TVME
4. OEM removal tool https://www.amazon.com/gp/product/B0007TC9LW/

I got the Metro Axxess stuff, others prefer the Maestro iDataLink system.

ok, I went on Amazon and found the 1400NEX you mentioned and found a backup camera that looks like it will work fairly well. There were a couple of other items recommended - one to control the radio from the steering wheel and the other I'm still not clear on - looks like it might be used to be able to play videos without the car being in park. If that's the case, I'm not interested in that as I don't want distractions for my 16yo daughter nor do I think she'd honestly want it. If that cable does something else that actually makes it useful, please let me know.

Parts I'm considering: stereo unit - https://www.amazon.com/gp/product/B07951J34N/ref=ox_sc_act_title_2?smid=ATVPDKIKX0DER&psc=1

backup camera - https://www.amazon.com/gp/product/B005Q65ZIK/ref=ox_sc_act_title_1?smid=A2KV19AYUKS3X0&psc=1

steering wheel controls - https://www.amazon.com/gp/product/B00B4PJC9K/ref=ox_sc_act_title_4?smid=ATVPDKIKX0DER&psc=1

cable of unknown usage (lol) - https://www.amazon.com/gp/product/B00A9AQPUU/ref=ox_sc_act_title_3?smid=A1AUFI5NHGNZ61&psc=1

All for under $365 seems very fair to me. Am I forgetting anything else?