so this guys selling a colnago master olympic and im thinking about buying it for a fixed gear conversion. i've got a track crankset and a fixed gear hub. what length of spindle should i get for a good chainline? because i dont think the bb i have now with a 108 spindle length would work. someone wanna help me out?

Spindle length varies from crankset to crankset, which one do you have?

i have a steelwool crank set. im pretty sure theyre just rebranded andels or something.