120k service. What to do?

I'm coming up on my 120k mark and am looking around to see what upkeep I need to do. Since I've had it (~110k) I've changed/upgraded all the air filters, got new tires, changed oil regularly, and topped off coolant. Anything else is guesswork on when it was done last by the previous owners. Everywhere I look it seems to be different, and collectively here's what I've seen so far:
-Oil change
-Diff oil change
-ATF oil change
-Cleaning/changing radiator?
-Rotate tires
-Change serpentine belt (I should do that anyway)
-Change spark plugs
-Valve adjustment/tuning?
-Change coolant
-Change out original shocks (opportunity to lift?)
-Brake fluid
What else should be part of this service?

 

All depends on when/if any of these things were done prior to now. You don’t give nearly enough info...search is your friend.

 

I updated the OP with what I've done so far, but search has only confused me. I get everyone's truck and the way they service it is different, but I'm seeing big differences between different recommendations. Just trying to get a collective idea here.

 

A nice detail.

 

Your list is pretty thorough, but don't forget about the Transfer case fluid and Power Steering fluid. You can't go wrong servicing those, as l bet many people don't do it. Or even think about it.

 

What does the owners manual call for?

If you don't have records, assume only some basics have been done, like oil changes and everything else needs attention. That way you know the 'baseline' of the truck as you move ahead.

Don't have an owners manual? No problem. https://www.toyota.com/owners/resources/owners-manuals/tacoma/2006

 

Thanks for asking this! I'm in a similar situation. I'm planning on all that plus a humble lift. Looking forward to seeing everyone else's insights.

Personally, and in general, I just inspect belts semi-regularly rather than sticking to a schedule. With a similarly unknown provenance though, I'm going ahead and servicing all fluids.