I can....... you need to post some pictures and verify that it is in fact a Lunati crank. You might consider contacting Lunati and asking them how to...
The grease zerk fitting is on the side of the housing near the thrust bearing at the front of the pump. Depending on how old the bowl is you may have...
The 17-4 shafts are magnetic and the standard Berkeley shafts are not magnetic. There is also a stock dominator shaft that is magnetic, but not made...