Does anyone know if the rear diff flange on a viva is the same as an escort flange?

The Escort axle comes in two different versions with different diff flange PCDs, the flange fitted to most Mk1 Escorts and some MK2s with the English axle is probably the same as the Viva.

if you're getting a prop made, bailey morris or dunning & fairbank (i forgot while one i used, but they were very good on service and price, think it was D&F) tell them what axle it is, and they should be able to make it for you. they'll have all the sizes listed somewhere