i did a turbo conversion on mine a while back.use a fiesta turbo block,pistons.you can use your head but will need a fiesta turbo camshaft.management wise use inlet manifold but will need a fiesta turbo air charge temp sensor,map sensor,ecu and a bit of loom change needed.injectors will be fine for a simple set up but will need beiges if going 195 route.

hope that helps a bit