FWIW
FWIW, I'm only counting 7 injector grommets.......Thanks to the OP and everyone that posted on this thread. It sure helped a lot today when I did our 99 LX470 with 81K miles.
A few things that I found helpful were:
I backed up the truck on to ramps and then I removed the front tires/wheels. I then lowered the front lower control arms onto 6"x6" wood blocks. This made it much easier to reach most of the "operation".
I removed the hood struts (and later replaced with new) and tied the hood up into a more vertical position to allow more clearance.
I only removed the bolt that holds the transmission wiring harness which enabled me to move it around and use a long 14mm socket to reach both starter bolts.
I didn't remove the rear coolant crossover line but did remove the two rear wiring harness bolts.
I noticed that the fuel injector isolators/grommets (part # 23291-41010) were severely cracked so I went to the Toyota house and purchased a set for about 3 bucks each. Very simple to replace and provides piece of mind that they won't need to be replaced in the near future.
I disconnected the fuel line at the filter (which I replaced) but removed it from the FPR and intake to reinstall. If I did it again, I would remove the line from the FPR before removing intake to keep from bending the fuel line. A crescent wrench will work here if you don't have a metric wrench big enough (hint...it's bigger than a 19mm).
Here's what I replaced and all is good now.