Yannick,
There are a couple of different sized starters, including the auto and the cortina ones being slightly longer. Provided you have standard engine mounts all 'should' be able to be removed with the mounts in place. Its a bit like those wooden little puzzles, you have to twist one of the pieces a certain direction first and remove it otherwise the whole lot seems locked together. from memory the started needs to rotate slightly and be tilted up as you removed it, enough to get the end clear of the bellhousing, then the lot can be slid down. Its all comes down to the right combination of swear words and how you hold your tongue.....

When you get it out, you'll wonder how it took so long....Oh make sure the positive lead etc are disconected, makes it easier...
Shaun