ALL 360s had cast cranks and, I believe, ALL 400s. Both could be had with manual transmissions in cars or trucks.
As for drilling the crank. I've done it. Possibly the worst beating my hands and wrists have ever taken. It is IMPOSSIBLE to get a straight hole and I had a reamer to finish the job off. Next crank for that motor went to a general machine shop as the engine shops were not equipped for this task...I think it cost me $25...
