You might be thinking of the below article that mention the LC250 being 7” shorter than the LX600. That article does a good job of comparing external dimensions to other Toyotas, some of which is incorrectly stated in this thread...
The data around the failure rate will never be good enough to answer the question of if and when it should be replaced. The combination of unknown variables (like maintenance, driving conditions, etc.) combined with anecdotal input makes it impossible to predict. Best I can think is to...
For some people setting up and playing with all the gear is half the fun. I’m not one of those people. 20 minutes max for me. While on your trip make a list of what you actually use and leave all the other at home next time. Create a place for everything else.
No problem at 200k. This is the second 80 I’ve had the the HG replaced as PM. Neither needed it. Surprisingly little carbon build up. Cylinder walls perfectly fine
I’m not sure that’s accurate regarding 80’s not coming with foam from the factory. A new radiator from Toyota comes with the foam already attached. As far as I can recall the originals I’ve removed had foam as well.
I’ve been using the Slee bracket for the Dobinsons remote reservoirs for a year now. Through plenty of use they’ve remained tight and secure with no issue.