Its a nice topic actually and an interesting question. Me and Ehsan are looking to locally fab a snorkel for the FJ40....
Probably going with the Safari design would be best. This one is probably for RHD B series engines with air boxes on right and snorkel on the left. The F series engines have the air boxes in the left anyways.
One could probably think about ordering the Safari one but probably best bet would be to look on ebay and find a good deal.....
One thing I keep thinking about is what happens to the snorkel when you drop/take off the windshield....