Not a bad figure for standard, most of the ones I have seen struggle past the 140 mark. The engine is also very heavy compared to something like a 2litre Zetec.

I would be looking at something like an ST170 motor which humps the I4 in every aspect. Not a straightforward fit as we have found but has so far been found to be exceptional and it's only in a running state at the moment until the throttle bodies and management goes on. Mate is putting one in a Ka so I see no reason why it shouldn't go in a Fiesta