[Christ]

I would think (inexperienced thought here) that a 9" ADC could keep you moving with proper cooling.

I want to think that the transmission input shaft to driveshaft output is just over a foot, which will probably pose another problem for you.

While I believe you can probably get away with the diameter of an 11" motor, even if you have to trim the housing a bit, you probably won't like the length of it. I'm sure you'll have to modify the frame section on the driver's side of the car, if you can't get clearance from the motor.

If you're OK with fabrication, there is still an option for swapping in a smaller trans, as well. The OEM CRX trans can hold up to ~400HP before you start grenading it, it's a little over engineered... the axles are always the breakers.

I'm not sure what other trans you could use that would give you more clearance and not require cut axles, though.