I used the Flaming River manual rack kit on my '66 V8 coupe.  I hate it.  I wish
I had not spent the money on it.
    The tilt steering column is cheap, and was a real bear to install.  Trying to
get the wiring correct took a while.
    The rack and cradle are well made, and very simple to install.  I did have to
modify one of the brackets to clear the starter, though.
     They advertise "Manual steering that drives like power".  BS.  I had to buy a
bigger steering wheel because it was a fight to park it.  Worse than a truck.

    My advice would be to look at the Steeroids power kit.  Also, I have heard that
FR now has a power kit.  That would be good, except get the column from somebody
else, like Ididit.  Or you can use the stock column.

I was looking at all of the mustang mags a few days ago.  One of them
had a big article on converting a tough steering manual stang to rack
and pinion.  I'm pretty sure it was for a 69 too.