Having made my own for my Roadster using similar components, I cannot see what difference it makes. I recall fixing the arms to body first then the bracket to rear bonnet release to accomodate locking support arm as Plus Six below.
Once all bolted together you can make final adjustments to length of support arms so bonnets are held up equally.
![[Linked Image]](https://i.imgur.com/CHhCPlB.jpg)