As far as I can remember it's irrelevant which dash the engine runs (maybe bar the speedo sensor in the box). What you have to do if you want to run analogue clocks is use the analogue loom or vise versa with the digital clocks and digital looms.

That is engine bay and dash loom.

However from your predicament I would suggest finding a digital engine bay loom from a puma and using that as it will connect straight up to the fiesta digital loom.