In your snorkel kit there is a template. You must use this template to see where you must drill the holes.

Click here for the correct snorkel to use for a 2.7 Hilux

BUT PLEASE NOTE:

1. Sometimes the holes on the template is not 100% accurate. Always fit the template on the snorkel and make sure the holes are correct before you put the template on your vehicle and start drilling holes.
2. Rather measure 5 times than having to drill twice!

Aslo have a look at these links: KZ-TE Hilux installation | New Hilux Installation

First you must stick the template to the body

Note that the vertical edge of the template must line up with the edge of the fender between the door and the fender.

The horisontal edge of the template must line up woth the top edge of the fender between the fender and the bonnet.

The arrow in the picture below shows where to drill the hole for the big hole. You must use a hole saw to cut the big hole. Measure the outer diameter of the pipe that will go through the fender as they are not all the same. Get a hole saw that is about 5mm larger than the pipe. Thus if the outer diameter is 80mm, use a 85mm hole saw.

Since the small holes on the template are sometimes not 100% accurate it is better to attach the template to the fender, then drill the big hole. Then while the template is on the fender put the snorkel in position. Then mark the posistion of the snorkel on the template with a pen. Remove both the snorkel and template. Put the template on the snorkel in the position you just marked, check all the small holes BEFORE you even think of drilling the holes.

After you drilled the holes, first remove all burs from the area you have cut and the holes you drilled. Then apply some etch primer on the exposed metal in order to prevent rust.

After painted the exposed areas you can bolt the snorkel in position and connect the pipes. Note that with some models like the KZ-TE Hilux there is a short metal pipe. This metal pipe must run inside the rubber inner pipe which runs inside the fender.