Yeh thanks for that, but I want to do it myself rather than pay someone to fix it.

A bit more research and apparently its the Focus gearboxes that are the cable shift variant? Can anyone confirm this?

If I were to buy a gearbox from a mk1 Focus 1.6 zetec se variant - will I be able to keep the case with its cable shifter, transfer the preferable gear clusters / ratios and diff from a Puma into it?
That's presuming that everything on the outside will mate up hunky-dory in my mk5 Fiesta - i.e starter motor, clutch line attachment, gearbox mount and driveshafts etc.?