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That whole linkage setup really would be useless to a GT, you see them on some old fashioned drag racers but they are not for going around corners. I stumbled upon this recently in a book while studying how to do a four link on a 49 chevy.
For the GT and anything that you want to corner you can't beat the panhard bar setup. There are some tricks to tuning it to work at your ride height and "full bump" height. It can be made adjustable on the GT, somewhere there's a picture in a thread showing it on Speedway GT.
According to the books about how to make race cars handle, the location of where the Panhard mounts on the GT axle is perfect. The other end's location could vary. When you're watching Nextel Cup races and the car goes in the pits and a guy runs up the the right rear window and sticks a tool in and gives it a crank, he's either adjusting wedge or tracking (up or down location of the panhard bar mount to the chassis. This makes the car go into roll oversteer or roll understeer around a corner. Very important if you are living near the edge... Just look closely at your GT and see how it works. It is simple!
 

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Yes, I guess it could react opposite of what you want under some conditions... I'm not used to making a car turn to the right... My experience is all in flat out straight line acceleration with one kind of car, full throttle hard left turns in another car, or hauling heavy loads off road in trucks...
It's all in the setup, sometimes what looks right or agrees with the textbook doesn't work as well as some trial and error adjustments.
There's just so much to it!!
Merry Christmas to all!!
 
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