height between stock heatsink and bottom

[Luke]

the teardown doesn't give any more info than you said in your response, which isn't much either to be honest, i basically need the minimal height that is available (in whole mm is good enough for me)

Hard to measure but approx. 1 - 1.3mm.

edit: perhaps a bit more than that. The bottom portion of the case is not uniform, so its thicker in some places than others.