I'm feeling lucky today...
I couldn't bring myself to order a new axle just for a new lug pattern when my original is in perfect condition and I really want to keep the handbrake. After reading the IH8MUD thread about the 6 on 5.5 I dug a little deeper to find that the M416A1 (which I have, is the one with hyd. surge brakes) has the correct bearing sizes to be able to swap out the hubs for new ones in whatever pattern needed.
A quick look through the M416 manual shows the bearing part numbers for the A1 as 68149 and 44649, the same bearings in the hub thats correct for the pattern in my JK.
http://www.southwestwheel.com/store/p-243-c9550lb3e.aspx
I don't know if it makes a difference or not, but my A1 is a 1989 model.
Hope it helps someone as I've never seen the bearing differences noted between the M416 and the M416A1
SB