In order to run a transverse engine in-line, a spigot bearing is required to be installed. To do this the clutch pressure plate and clutch need to be removed, before installing the bearing. The bearing needs to be tapped into place with a hammer and a wooden drift making sure that the finger bearings are at the back. Then re-install the clutch and pressure plates making sure the clutch plate is aligned properly.
Forget this small bearing and your gearbox is scrap within a few hours on the road.