Fiesta turbo throttle body would be fine mat and pretty cheap or go for a cfm 76mm one there a few hundred quid for a zetec and have a plate welded on to match throttle body holes. I used a fiesta rs 1800 inlet and a fiesta turbo throttle body as I used ofab management and it allowed for manual adjustment of the throttle plate so I binned the idle speed control valve.

Cheers paul