Reply to "Vague steering, need help!"

As others have stated here, they were not really mistakes, more the technology of the day.
I'm sure Dallara would have put his utmost into the design & done the best he could.
And years later his designs would have been that much better.
Everything evolves.
I have a huge collection of books on race car suspension & design from the 1960's to the latest offerings.
Suspension has changed allot.
Although most of the geometry was well known in the 1960's, some aspects were simply ignored or considered as less important.
Toe change due to bump steer is not a huge issue if the vehicle has very little suspension movement.
The less the wheel moves the less toe occurs.
In my job where I'm designing off-road suspension with 20” plus of wheel travel it has to be right.
If I allowed the Pantera’s geometry on a buggy the wheels would literally turn into a corner all by themselves after 24” of travel.

Remember though, that the tyres of the day were considered high tech, they were as good as it gets then.
And if your tyres were not up to scratch you had to make the suspension that much better to find an advantage.

It was simply evolution, designs have evolved over the years & we have much higher expectations now.

regards,
Tony.