Tecker i would stack them and if they are identical , they look it , the options for wireing them up are many.
You have all the individual coil leads available so, if you orient the coils directly on top of each other you could wire the coils in series if you need to ,
example: coil 1 start would either be connected to the alt output or connected to the star point.
coil 1 end would be connected to the other layer coil 1 start , and the other layer coil one end would be connected to the next one in the phase
or you could wire them in parallel and rectify each stator seperatly for double the current , but i fear that since there is so few of them , just two per phase that you may make out better by connecting them in series
a word of caution , if you happen to get the coils backwards the will cancel each other out so it may be best to start one phsae at a time , rectify it and test it , and dont make any connections perminent till you are satified 