*Warning, the template was not correct for the 4runner. It was correct for the large intake hole but not the mounting bolts.*
I covered the whole fender with masking tape to protect the paint. I also removed the inner fender and unbolted the fender.
I taped the pattern onto the fender, lining up the top and the door. This snorkel it for the Tiger so I'm going to double and triple check alignment.
After confirming that the large air intake hole in in the correct position (including where it mounts to the A pillar), I removed the fender and used some foam rubber to protect the fender from the jigsaw, drilled a hole and cut out the hole.
Once the snorkel was slipped thru the hole, I realized that the template mounting holes were not in the proper positions. I outlined and taped the snorkel to the template.
This allowed me to flip the snorkel over and find the holes, pushing on the template to make the holes
Then I taped the template back on the fender and drilled the 5 mounting holes, (painted the raw steel edges).
This shows how far off the mounting holes were on the template (up to 2")
I mounted the snorkel to the fender using the supplied hardware (silicone around bolts), mounted the fender (bolting the fender on). I drilled the three holes in the A pillar and screwed it on (I chose to use screws instead of the pop rivets)
Now to turn my attention to the connection to the air box. I removed all the stock tubes and slid on the big rubber elbow that is supplied (this required some serious stretching and some WD40). then feed the rubber elbow back thru the inner fender hole. From under the fender, slip the elbow onto the snorkel tube (some WD40 again. Re-installed the inner fender.