With rear steer, Ackermann correction has the steering arms angling inward as you go from the knuckle to the tierod end. Front steer requires that the steering arms angle outward, and this will reduce the maximum amount of backspacing that you can run on the wheels unless you also run wheels big enough to fit the steering arm and the TR end inside the barrel of the wheel. Given that wheel sizes for the cars of interest here were OE at 15" or smaller, that didn't happen as OE, so the amount of Ackermann correction may be limited.
Running "drop spindles" can make it harder to play around with Ackermann.
Norm
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mine - '08 Mustang GT/5MT; '79 Malibu/5MT
hers - '10 Legacy 2.5GT/6MT
auto-X, my bad weather car & general spare - '95 Mazda 626/5MT
on loan to son - '01 Maxima 20AE/5MT
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