First, if you leave the existing steering gear box in place, the car will be "harder" to turn the wheel. As long as you are OK with that, then there is no issue. The power box is a 4 to 1, and the non power is a 5 to one.
The right side inner and outer tie rods remain the same. The center link, and the inner and outer left side need to be changed, and the sleeve. If you get picky, the idler arm bushing needs to be changed also.
Here are the parts you need:
Tie Rod Sleeve: C2AA-3310-A (same as the right side)
Inner Tie Rod: C5ZZ-3a131D (same as the right side)
Outer Tie Rod: C5ZZ-3a130D (same as the right side)
Center Link: C5ZZ-3304-D
If you want to clean up your engine pit, you can remove the double groove crank and water pump pulleys, and replace them with singles, remove the power steering ram bracket that attaches to the frame, and the hose bracket that attaches to the lower control arm.
You can also make some money by selling the parts you take off. Send me a PM if you want some realistic prices on the take off stuff.