Paul, there are few things to consider with setup like my engine.
You need a longer drive shaft and Tracy  said he will not make them.
The starter engages from behind the flywheel and the teeth on the flywheel are cut to accommodate that.
If you use the correct flywheel (Cosmo/20B) Tracy's dampener plate will not match the holes on the flywheel, so adapter plate is needed. There are few other smaller things to consider.
Buly

The trick is to partially mount Tracy psru in the bell housing.
I guess you were not on here when we discussed that. Here are
a few 3D's. This is what Ian did.

Paul Lamar ...No rotor no motor.

That's a very good idea Paul.
Buly

Here is a picture of how Ian did it.
You can also see why he is having trouble with his PSRU
drain back. The stock RX8 oil pan is just visible.