The set I ordered was made for the M-chassis (in my case an MA8), but I also don't use the original springs anymore.
The front was also a bit too low for my taste after installing the B6 dampers, so I fabricated some steel plates and put them between the shock towers and the top of the strut assembly to gain around 15mm height back.
And I definitely believe you - putting them back together (even with lowering springs) was really tricky. Honestly a bit disappointed from how it all fit together.
If I were you, I'd get a set of lowering springs and try them out, as driving around with over-extended dampers is actually even a bit dangerous.
(For reference, I use ~35mm lowering springs from Eibach)
Best of luck!