I finally decided to start modding my 80gb 5.5 properly but i have to wait a while to finish since I have to order everything from overseas.
For now I ditched the msata ssd because it was a nightmare running rockbox and bought myself a tarkan quad adapter, a single 64gb sandisk extreme pro and a "2600mAh" battery from aliexpress:
http://abload.de/image.php?img=dscn2555v3lhr.jpg
http://abload.de/image.php?img=dscn2574gulfv.jpg
http://abload.de/image.php?img=dscn2576pjx55.jpg
It is a tight fit and I hope the battery last the whole week instead of a day or two the original one gave me.
Fot now I'm still waiting for customs to release my 6th gen blackout shell and until then I'll have to endure that plastic black piano finish on mine