They also offer conversion torque shafts and linkage to use the 10.5" bell in '63-'66 A bodies. You *may* have to flatten the pinch weld in the tunnel for bellhousing clearance.
Unless your friend has it, and is just not pictured in your original post, you will need to come up with a neutral balance 10.5" (disc diameter) 130 tooth flywheel to go with that bellhousing.
Along with the Brewer's conversion linkage, unless you are capable to fab and modify your existing linkage. (Was your car originally a four speed?)
The later, larger clutch is a worthwhile upgrade- especially with a healthy 340.