There are a lot of very good reasons to rebuild your own carb.
Pinhead (no relation) has videos on the YouTube on how to do it. Many threads on 'Mud on same.
You can do it in a weekend, have you checked the turnaround time elsewhere?
Not to disparage the big names already mentioned, i got parts & pieces from each on my rig, but the LandCruiser is very simple and meant to be wrenched on by owners.