In Japan it is popular to take the electric power steering motor/ecu from suzuki kei(mini) cars and weld it into the FD's shaft between the firewall and steering wheel. Getting it to works seems strait forward, one safety note is installation must not affect the collapsable nature of the piece to make sure is does not impale you in the event of a crash, that too is not hard if given consideration during planning.

It only provides a small boost, but just enough to make a difference on the track, low electrical demand, and very light.

Pic is just a for reference of the type not a specific example.

https://cimg2.ibsrv.net/gimg/www.rx7...98fcd1775b.jpg

Man where was all this great info when I was replacing my steering rack 3 times in the last couple years? I had considered electric assist after driving a new Mazda3 that has an electric rack and was not turned off by the experience. I wonder if the 3 or MX5 racks would fit an FD without too much trouble.

I'm sure the RX-8 or ND electric power steering rack could be adapted, but without the stock ECU/programming the results will probably be like putting a 13B-REW in a RX-8 with a carb and expecting it to perform like an FD...