Make sure you do a search before doing this upgrade. The top wishbone rod ends that are supplied with the Caterham kit, have the wrong ball joint taper on the end, they are designed for the non trunnion uprights, which is a specific Caterham part and not Triumph. You can buy the correct rod ends from a motor factor, but you need the correct part number, if my memory serves me, they are a Fiat 132 part, that has a mm thread but an af taper, but do a search and you will find the part number