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@deleted
yes, i use 107mm bb about a 48t chainring and have fine clearance. don't forget that the steamroller is track legal so it would have been stupid of them to make a trackish frame that couldn't take track cranks.
will you ever want to go fixed (i read this whole topic as you were going fixed)? if so, i'd recommend a 107mm bb and then washers on the chainring for use with freewheel, this will mean that it is easy to get right chainline fixed. alternatively, measure your chainline with the freewheel on (half the O.L.D. minus the distance from the teeth to the nearest locknut), and get bb to suit, bearing in mind that 107mm bb gives 42mm chainline.