hi mark, over the lenth of the door it is enough to put it out of line, once you have a replacement hinge, (ask jimmy92) you will need someone to help, i think the bolts are 12mm, i used a 3/8 drive socket set, have helper to hold the door while you loosen the bolts into door, carefully move door out of the way and remove the bolts into pillar, remove hinge and fit new hinge in reverse order, it sound daunting but it's fairly straight forward really, once fitted you will have to adjust door using the bolts you have removed, you might have to adjust the striker plate to aid closing. any problems give me a shout. :thumbs