Backup Camera 2010 Tundra

I've been looking at 2019 Tundras and they are nice, but don't want to spend 25k + Trade right now to upgrade from my 2010 SR-5 which has a few things I don't want to give up. I can't justify the few "nice features that would be added for $25k going to a Limited. My 2010 is in great shape with only 53k miles and should keep for a few more years.

It would be nice to have a backup camera OEM type. I see some threads but they are old about adding a rear tailgate latch handle with a camera and a Gentex rear view mirror that's pretty much plug & play. I found a "homelink required" 3.5" Gentex mirror, but cannot locate the 6V OEM rear camera and handle.

So I know there's threads on this but they are old and many dead end links.

Can anyone recommend a rear view OEM look/fit/plug & play rear camera setup for a 2010 SR5 DC Tundra? Would you do the 3.5" mirror screen? I just need something to get me by for lining up my trailers (snowmobile 2 place & Lund 17' Boat) for mounting and backing.

Thanks for any up to date thoughts on this.

Reb