It appears that the clutch MC is included in the photo shown. It also has a separate shaft for the clutch pedal.
So it may have everything needed for the conversion. It also appears to be a CPP set up. As far as I know the components are OK
but they are notorious for providing poor installation instructions.
Several other aftermarket sources provide these same conversions.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine