Hi Lee,
I omit the two lower bolts that connect the ZF to the bell housing. It makes ZF removal in the car easier and omitting the bolts has not caused problems for me.
This car has an oilite bushing instead of a pilot bearing and my plan is to continue to use it. The wear pattern on ZF input shaft seems acceptable. I will put some engine assembly lube on it during final assembly.
This is the first time I have come across an oilite bushing. I have always used pilot bearings and installed fresh ones. I press them into the crank and pack them with a small amount of grease.
Here is a photo of the input shaft wear pattern. I will be showing it to Wilkinson and he might advise me to put in a pilot bearing.