My Yeti SB150 came stock with a Fox 36 170mm fork. I bought a Zeb 180 thinking I would overfork it by 10mm. That turned out to be not true. To get a Zeb to be the same Axle-to-Crown length as your Fox 36 you have to drop travel by 10mm. You'll see in this video that to equalize the geometry of the bike I had to get a 160 air shaft installed on my 180.

I have a 170 mm air shaft also as backup. If I need more travel than the 160mm then i'll bump it up to 170 at the expense of 10mm (0.5 deg) slacker in the front.

Hope that helps some of you!