Interesting...
Do the kroot heads fit on the lizzie bodies? 
basically, they fit on the Saurian bodies (since it works the other way round).
Saurian heads are actually a bit larger (than Kroot heads) with the neck guards, but I even converted some skinks with saurus heads.
However, only the skink heads are small enough for the Tau bodies.
I didn't try, but I would guess the Kroot heads might even work for Skinks.
Need some Kroot heads? I have plenty
if it works out You could "repay" me with skink heads
