I know last year that quite a few Factory Five Cobra guys were testing out an electric power steering unit.
Here is one I haven't seen
http://thefactoryfiveforum.com/showthread.php?5185-Power-Steering-Installation-UniSteer-ElectraSteer
Here is the one that has been getting used from Fast Freddie's Fabrications
http://www.fastfreddiesfabrications.com/shop/category.php?id_category=4
Here is a thread over at ffcars.com
http://www.ffcars.com/forums/17-factory-five-roadsters/285672-electric-power-steering-pump.html
Here is one I haven't seen
http://thefactoryfiveforum.com/showthread.php?5185-Power-Steering-Installation-UniSteer-ElectraSteer
Here is the one that has been getting used from Fast Freddie's Fabrications
http://www.fastfreddiesfabrications.com/shop/category.php?id_category=4
Here is a thread over at ffcars.com
http://www.ffcars.com/forums/17-factory-five-roadsters/285672-electric-power-steering-pump.html