[rotorwrench]

It's generally a good idea to have both the disk and the pressure plate rebuilt or renewed at the same time. The condition of the flywheel is also important. Clutch housing alignment doesn't have as much to do with the clutch as it does the livelihood of main input shaft & bearings in the transmission but it is very important none the less.

Much of the reproduction clutch stuff is suspect. I send my old originals out for rebuild by shops that take care to get them right.