ok it uses 2mmx5mm screws, I ordered some 2mmx10mm and 2x20mm screws.
Will post some pics, it has a nice blue led light inside which looks really good when the unit is as designed fully enclosed, although it leaks around my room at night with the gap I created to add the intel ports.
Some photos of what is going on. Sorry the inside view of components is blurry didnt realise until now (took 2 days ago), the right blue thing is the msata ssd, to the left of it is the intel nic addon card, in the mpcie slot which was originally populated by the wireless nic card.
The idea is I will have the base screwed on again without any slant, but with longer screws so there is a gap to allow for the new cabling and bracket to fit in place.