I agree with Rory. Your best friend in the garage will become a 3/8" drive single hexagon socket set. Use Imperial size sockets and spanners, not metric near-enoughs, and the job will be a lot easier.
Get something like this and it should serve you well to work on just about any car you're likely to have ( I think this one is a single hexagon).
https://www.machinemart.co.uk/p/clarke- ... UrEALw_wcB
A 1/2" drive set is useful for the heavier jobs but I rebuilt my IRS using only the 3/8" drive set and a good torque wrench.
Taps and dies are very useful for cleaning up threads although you could get away with using screws with notches cut into them for that. I've even done it with a notched spark plug to clean up plug threads.