Hello im looking for some advice on doing an engine conversion on my fiesta mk6 zetec s. I have a focus st170 and was hoping to put this engine in the fiesta.

I have done two engine conversions before but these were straight foward and i believe this one may be a little more complicated. The main things i would like to know if anyone out there has the knowledge to save me some time.

- Will i need to make custom engine mounts or just modify my current mounts on the fiesta to get this zetec to fit. The current engine in the fiesta is a zetec SE so being a zetec i wouldnt have thought the mounts wouldnt be much different?

- The st170 is a 6 speed box but i have heard from a friend the ib5 box may fit does anyone know if the bell housing is atall similar? If not what other box would fit im not too bothered about the gear ratio as the engine will provide enough power for the now

Somewhere out there must have put a mk1 focus engine in a fiesta and be able to provide your knowledge =)