Unless the Shure is sounding somewhat rolled off and or 'shut in' within the mid through top end then I wouldn't bother.
Without sufficient capacitance a MM will begin rolling off well within the audible range due to coil inductance. Capacitance is restorative here, therefore, one can 'dial up' the upper midrange through high frequencies as one wishes, especially so, with such as these old Shure models. These also allow for an easy experimental path toward finding out exactly how much capacitance sounds right with your system, room, ears, taste, etc. via inserting various value resistors into the chain (i.e. rather than faffing about with numerous different cables). Much easier than the opposite case of having to reduce total capacitance in order to eliminate a shrill and/or sibilant, surface noisy sound from cartridges that 'want' to see less pico-Farads.
Let me know if you'd like to give this a go and I'll forward on a 'recipe' including a calculator.