my target voltage is 120 line to line Y connected 3 phase at ~380 hz
with the final product being AC and not DC

the slot fill with the original winding is about 75% or so, and i can go with
much smaller wire. my hope is to replace the 7 turn/pole with 21 turns per pole
which i think is doable.

with the increase in turn count i would expect higher slot leakage inductance
but am thinking that current also plays a significant role
perhaps i can triple the windings if i reduce the current by a factor of 4 or 5
with the net effect being reduced?

that i don't know for sure

this is why i was interested in bifilar
i knew all along that i was faced with a rewind of the  stator.
and while most of the machine is technically locked in by design (i am not going to recut a stator core, or fabricate a rotor, etc.) winding however is something i can make a change in.

i am now thinking that perhaps it would be interesting to wind one phase
bifilar as a test, then remove it and replace it with a standard double wound
(2 in hand) convensional winding and compare the results.

in theory the bifilar method should reduce of eliminate the back emf in the stator (under load) and provide much less armature reaction (if you wanna call it that)
whereas the standard winding under the same load would have a back emf established in the pole that bucks the flux across the gap.
(here again i may be using the wrong terminology)

anyway, thank you very much for your input
it is always appreciated