Hello

Due to some unfortunate events, im in need of a french thread bottom bracket that fits with my weird setup. I have Campagnolo Record Strada cranks that i use in a track setup, i presume the taper is in the same location as the Pista versions? So i would need 109mm ISO french thread bottom bracket, but the velo orange ones have only JIS ones. Any idea what spindle length would be correct?
My current spindle is some weird soviet standard with soviet tapers and the cups take 6mm ball bearings so i would like to get something thats with sealed bearings.