HI,

with mine noticed it by chance doing a restoration, S2, so the sump
i assume was off either a s1, or possible a std cvh, not compared
that but if the oil capacity is the same i would say the std sump is as a s1,
but may be baffled differently, put it this way a xr3i of the s1 era is the
same sump.

DAVE R.