Front hub question

[m swann]

So after checking out part numbers i have drawn the following conclusions and i want to check here to know if this is correct or not.

Series 1 uses different strut inserts than series 2 & 3 (tube is shorter). But series 2 & 3 strut insert is the same, and is interchangeable?

All series use the same inner front wheel bearing. ?
Series 1 & 2 use the same front outer wheel bearing so their spindles are the same ?
Series 3 uses a different front outer wheel bearing hence a different spindle.

series 2 uses a different front rotor than series 3 . why ?

So can I take my series three struts to build a new front suspension on, swap to series three front calipers and install on my SA ?

Any advice or errors would be appreciated.