Restoration of Tom Myl's 1968 Super Stock BO29 Hemi Barracuda

I think auto have rear torque boxes and 4 speed have front and rear

Yes, thank You. This makes sense, but only some of the 383 cars did have them up front, so if all 4-speed cars had them front, some sort of selection must have been done here at some point in the build...?
Anyone know of a SS 4-speed that doesn´t have them front? If so, it´s a hit and miss thing like with the production 383`s. Not likely though...