for a 1.8 turbo conversion i would look to the focus rs as and example as this is just a 2 litre zetec,
the 1.8 and 2.0 zetec are ssentially the same engine,
first off you need to lower the comp ratio,
http://www.performanceenginecomponen....asp?id=250269
those should help, and will take a good bit of power too,
a set of frs or after market cams for the turbocharging application may prove usefull,
the focus rs exhaust manifold will mate up to the 1.8 zetec head, and you can use the inlet manifold from the frs, the frs has a larger throttle body than the other focusīs, and you will be able to use all the bits available for the focus rs for tweaking some extra power out of your engine, such as intercoolers turboīs and exhaust systems,
as for a gear box i would look towars sourcing a used frs one or at the very least use the mtx-75 from a 2 litre focus, the IB5 is pants and wont take the power,
and sourcing an frs flywheel so you can use the uprated clutches available would also be a good move.