Yeup, the axle nut is a 32 mm, I'm in the middle of a ZC swap and we had to take off the axles. Also, get a BIG ****ing breaker bar. If that axle nut hasn't been touched in 200k miles, you're going to have hell to pay to get that thing off. For example, on my crx which has only 170k miles, we broke 2 1/2" extensions trying to get the axle nut off (which Sears gladly replaced with new ones =]). We leveraged our ratchet with the leg of the ****ing engine hoist, which is about 5 and half feet long and about 30 pounds, and my buddy was putting all his weight on the end of it, and it STILL didn't come off--it just broke all his extensions >=[. Now, that thing was WAY overtorqued, and the guy who put it on should be sacked.

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I guess that was kind of a rant... I don't want to scare you off doing it yourself or anything, tho We'll help you through it.