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Not sure what the differences are between the two...
I installed course spline 40 hubs on my M100.View attachment 903670



I did some grinding on the LC hubs and drilled the M100 drum to fit. I took a lot of pictures for a write-up but I wanted to get some miles on it first to make sure everything worked OK. I still only have about 100 miles on it.
Adapting to the M100 brake drum was probably 80% of the work. If you don't have brakes then you should be able to install the hubs with little problem.
The disadvantage is you lose almost 1/4" backspace. The LC hubs are not as long (bearing to bearing) as the M100 hubs.
Also the spindle nut sticks out past the outer part of the hub so you cannot use the flat hub/bearing cover (even though the hole pattern is the same). I used the ends of some old style "can shaped" warn hubs for this. They worked very well.
I'm pretty sure I used:
Early FJ4X front hubs (used with drum brakes)
Cleaned and reused the OEM inner bearing
Timken seal 225450 (don't use the OEM seal, the inner diameter is too large)
Timken outer bearing 24780
Timken outer race 24720
Ends of course spline Warn hubs
In the pic above, I was test fitting some 40 wheels that I eventually want to use. For now, I'm running some freebie Tacoma wheels w/ spacers. Here you can see the Warn hub ends
View attachment 903961
I know this is an old thread, but how much wider did the conversion make your track width?