Sounds right to me. I was referring to the Tundra arm and coilover swap though, not the spacer. If I'm not mistaken, stock Tundra parts will net you roughly 2" on a 200. Therefore if you get coilovers that are advertised to lift the front of a Tundra 1.5", then you'd get 3.5" (from stock) if you run those with Tundra arms on your 200. Please correct me if this is wrong.
swapping the tundra arms will not net you any lift over the cruiser, if any it is negligible.
You can run any shock with the tundra arms.
I had my Icons rebuild at 60K miles. while they were off the truck I ran stock landcruiser coilovers. They fit fine.
the second time I had work done on the coilovers, i ran the LC stock shocks with 2.5" spacer. Still "worked", fitment was good, it just was not optimal handling. it worked for the week the shocks were getting serviced.
Little changes make noticeable differences. This is my daily driver. I frequently have two kids in the back in carseats. I try to keep the suspension a little softer to keep their ride smoother.
I have tried 10mm, 15mm, and 27mm spacers to dial in the combination of lift height and ride quality. I typically run 3.5-3.75" of lift.
To get that, spacers are needed. I'm still running the Tundra front coils, because I don't have a big bumper or winch.
The 10mm spacer was perfect for the height with 17" rims and 34" tires. The tire sidewall absorbed much of the little bumps in the road and handling was firm, but plush.
when I went to 20" wheels and 35" tires, I lost some of the absorbtion from the tires.
I experimented with 27mm spacers. the spring collar was very high on the shock body. Very little preload on the spring. the front end was very soft and had excessive nose dive under breaking.
As a compromise, I now run a 15mm spacer with the spring back at the 2.5" setting. There is still a little more nose dive than I want, but I also want to get the rear taller before raising the front any more.
For the upper arms, if you stay below 2.5" lift, you should be able to get good alignment numbers with stock arms. Tundras have been doing it for a decade.