To Everyone,
   Thanks to everyone for your responses, they helped a lot. I also
called Tracy and discussed this with him. I learned
some new things. I'm sure all of you will agree that knowledge is good.
Now the conclusions: assuming that they are
correct. Only time will tell.

   First, on the RX-8 engine itself, when the #1 rotor is at
top-dead-center, the timming mark on the trigger wheel is
positioned on the timing pointer and the sensor is positioned on the 5th
tooth CCW from the single 30 degree gap
(about the 4 O'clock position).

  Second, for those like myself, who may want to use the RX-8 sensor
on the 13B; here is the process. You have two
choices. One is to mount the trigger wheel to the existing hub and
accept  that the timming mark on the trigger is
not on the timming pointer. Then simply position the RX-8 sensor on the
5th tooth CCW from the single 30 degree gap
(it will not be at the 4 O'clock position) with a new non-ferrous
bracket; done!

The other option, which is what I will do,
is to position the timing mark on the trigger wheel with the timing
pointer, then drill new holes in the trigger wheel to
match the holes in the hub. Now mount the RX-8 sensor, as before, on the
5th tooth CCW from the single 30 degree
gap with a new non-ferrous bracket; also done! I hope this information
helps. Thanks again.
                                                                                                                                  Frank
R. Clementi



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