Fair enough then.
Maybe look for a 1.6 cvh lump. that'll get you just over 100bhp untuned and should be quite an easy swap.
Also there is plenty of people out there who have converted them with zetec / ST170 lumps , so thats also an option.
I'd love a mk2 Fiesta with some form of 2.0 fitted
Whats a lump?? Sorry Im not from the UK