You'll find links in my signature that may aid you in what to look for. WhiteLady the 01 LX470 will most closely match the 89-02, but even Redbaron 07 & Snowy 06 have many of same issues to watch for. In Snowy I did post up the timing belt job. Even thou 06-07 are VVTi timing belt is the same more or less. Starting at about posts #127
Scored a 06 LC (untouched Jewell restoration) you'll see T-belt job. I like to start job with compression test which means pulling all spark plus, then finish job with new spark plugs. In this one I put coils back in by hand just to cover spark plug holes to protect from dirt, grim & fluids falling in as I've so many project I knew systems would be open an extended period of time. Keeping plugs out makes turning crank shaft easier during Timing belt procedure. Make sure you have the FSM before starting job and follow step by step. The FSM is missing one thing, I call it #1 sub cover, it's in two pieces. Seen in post #137 of Snowy. Don't forget to install #1 sub before fan bracket! Mice can get in a knock out Timing belt, we've seen Mickey Mouse do this in Mud no joke!
I use the Aisin T-belt kit with tensioner & Aisin Fan Bracket. It's believed this is same as OEM, just without Toyota stamp on parts or box.
@cruiseroutfit has at dissent price and they're a supporting member of mud!
Replace fan bracket if old is no longer serviceable. I've seen last over 250K on some less than 90K on others. If any play felt in bearing, or oil coming from rear replace.
Hoses on our rigs kept clean and in mild climates last a very long time. How long who knows. Just inspect for any swell, cracking or hardening and replace if no longer serviceable.
The four I fine need replacing most often are both PCV hoses and the two vacuum hoses from power steering post #148
Scored a 06 LC (untouched Jewell restoration)
This is stock photo of 03-05 IIRC
On the 98-02 a rubber grommet is holding in the PCV valve. It will last about as long as these hoses (~90K miles), so inspect for tightness. PVC valve itself can usually just be cleaned & tested, but cheapest of all parts to just go ahead and replace.
Personally I never mix any fluids (brands). In 89-02 I only use distilled water and Toyota LL coolant (red) flushing at 30K miles or 2 year. I like 100% Red LL because after double flushing with 6 gallons of Distilled water, about one gallon of very diluted red remains in heater core and lines rear of heater tee's (fire wall). So after final drain of both sides block and radiator, I add one gallon of Toyota LL (Red) 100%. This yields a rich 50/50 mix in system. I then pre mix one gallon of Red & distilled water and top system. Then top after every 8 hour cool down until system self burps. This takes two or three cycles of bring to operating temp and allowing 8 hours to cool down.
