HH56 wrote:
A tough way to start a trip but you are certainly not the first to have this happen. Fortunately you did not have the large gear reduction starters used with the 356 and there was a simple and readily available option for replacement. Did the small starter bolt right up and does it turn the engine decently?

If it is satisfactory, since original Packard starters are getting more expensive and harder to come by, if the mini starter seems to work well maybe it should be recommended as a part of the changeover rather than just having the original starter modified for 12v operation. Might even be easier to find and cheaper than the cost of the mod and a new 12v solenoid.