You can try to use a different spacer also to bring the stack height down, but don't expect much more than half a mm or so, it really depends on the headset.

The shortest 'obtainable' headset I've ever come across was a 1990s shimano 105, the HP-1055, its something like 33mms. Was always my go-to headset which I can get to work where I figure there could be stack height problems. I think the dura ace's and 600s of the era are around the 36mm mark.