BB Spindle Length for Fat Chance Titanium

[Yangpei]

I'm starting to piece together parts to build up a Fat Chance Titanium M/L frame. Trying to keep it more / less period correct, I think I'm gonna go with XTR M950 3x8 setup. It looks like the Shimano M950 bottom brackets come in 112.5 or 116mm spindle lengths. I haven't been able to find a resource to help me figure out which spindle length is better / correct. Any help / advice? Thanks in advance.

 

[colker]

I had this set up on an Ibis Mojo.. if i remember correctly i used the shorter axle. The long one was used on full suspension bikes at the time.

 

[Stingercut]

I had this set up in a 93 Ti I bought and I can confirm it was the shorter axle.