Shaft actuated electric steering is awful, every car I've driven with it feels identical to the next with about as much feedback as video game joy sticks provide. Plus I don't know if you've seen one of those units but they're quite bulky, definitely won't fit in the engine compartment and doubtful they'd fit under the dash, let alone mate to the factory column, without a big reengineering effort. Best option IMO that's realistic for these cars is an electric hydraulic pump from a Toyota MR2, that gives you the efficiency benefit but means you'd still need to retain the lines and hydraulic rack, so it wouldn't be a two birds with one stone solution
If you were to persue the column mount though, you wouldn't need a manual rack, main purpose of those is to change the ratio to make turning the wheel easier, with the trade off of requiring more turns of the steering wheel. What you could do is disassemble the factory rack, clean it out, gut the piston seals, plug the holes for the lines, grease it up and put it back together. Unless there's play between the rack and pinion teeth that's a cheaper and equally effective alternative to retrofitting a fast ratio manual rack
Last edited by XR7-4.6; 03-16-2016 at 09:51 PM.