You do realize that at this point in time for Victa was a very busy time.Authorized dealers were given specific allotments of numbers to stamp on engines before sale.So even if you find these numbers the only thing you may find is similar numbers which would only help in locating which ones could have come from what store,and seeing as nobody knows what stores had what numbers.I'm not sure that would help.Now seeing as all 3 models in question were the same period it's not going to identity which model is what.You have to remember it's not like around the VC's time where numbers were so uniformed.It wasn't about coding or identifying models,it was about getting them out the door quicker.I do appreciate your efforts but it's not going to identity what model it is.