princess ball joint
Reaming the Sierra Upright for the Maxi Ball Joint is full of problems. The forum sites are full of all sorts of rubbish about reaming bottom joints. Some of it is potentially lethal.
Haynes Roadster Mushroom Adaptors
Ford Sierra Mushroom adaptors are available from many Haynes Roadster and Kit Car sources, but I needed some special ones to fit my 4x4 uprights.