Mazda Axle Diameter?

Hey I'm having a mind blank right now and my buddy's Mazda is in storage for the winter, but what is the axle diameter on these trucks? Is it 3" or 2.75". Thanks.

I just went and measured the one I have here, 2.75.

2 3/4"

are all mazdas different? i have a 86 b2000 long bed and mine is 3"

ran out to the shop and checked mine with a digital caliper 3"
86 b2200

the differences have anything to do with trans type? auto and manual??? i know the gearing ratios are different in the two trans...

i have a manual trans. i just measured it and its 3". also when i ordered my link tabs i ordered 3" and they fit perfect.

My '87 2000 is 2.75, but my 90' 2600i is 2.85.

My 90 is 2wd automatic and has a 3"

are you guys measuring just the tube or are you figuring in the raised weld seam?