The 101 use the big clutch, and only one version of inner and outer cover will fit. The outer has casting number 28-D-(and 1, for what I can recall). The clutch basket has 84 cogs, the idle gear has 36 and the drive gear 33 cogs.
Be aware that 101 covers can be confused with Chief parts as they are very similar in appearence. And easy to confuse is Chief drive gear that also has 33 cogs but a larger hole for the crankshaft. Scout early clutch hub looks the same but has a different taper than the 101 gearbox main shaft.