u will need the following.

puma lump, ecu preferably a tape one as its easier to fit(only 2 wires to join up then)
key and transponder for the engine to start. (u just swap the transponder into your old fiesta key then.
drivers side top engine mount
puma airbox .
puma throttle cable and u will also have to join some new fuel lines up as the connectors are different .
apart from that ts a straight swap. just use the standard zs driveshafts and exhaust system as they all fit.