time
Gummel, From reading other threads on this subject I think I saw that illflem (sp) has got this down to under an hour but he has done a lot of them. I would plan on two hours each depending on the level of ability of all parties but it sounds as if this would do. Some of the other posts suggest several at a time to be pulled down in teams. This is a good idea as once the engine is down as far as it has to go the drilling, countersink and tapping should go fairly quick for each unit. This is not to suggest of course that we should rush this aspect of it. Far from it. It just would be more of an assembly line process.
If anyone has done this themselves please add your advice.
John