Anyone use 'GM Spindle Length Spacer'?

[Wildthing]

Anyone use these? Thoughts from the suspension Guru's?
Link and PR info below:

http://www.drgas.com/store/product.php?productid=115&cat=22&page=1

Here is the absolute niftiest, easy way to reverse the backwards camber curve on almost every front engine, rear drive car GM has ever made. This Bolt-on kit lengthens the spindle by two inches. The angular relationship between the control arms and instant centers (there goes that engineering stuff) are revised and actually reverse the direction of camber gain with suspension travel. This kit bolts to the top of the spindle, and then attaches to the upper ball joint stud. It will fit GM A, B, F, and G body cars as well as Corvettes, and S series trucks. Requires the use of taller rebound bump stops, and realignment. Ride height is unaffected. It reduces tire wear, while increasing lateral traction, and tire to fender clearance. Made from heat treated 4140 steel. What more could you ask for?

[neki67]

Quote from David Pozzi: They raise the upper A frame 1 15/16" and that's too much unless you have a specific problem you are addressing.

You can find it under spindle extenders: http://www.pozziracing.com/first_gen_suspension_geome.htm#Re-located%20upper%20mount

[Wildthing]

Thanks!

[Marcus SC&C]

I have to agree with David on this one. 2" is way too much,you end up with a very short FVSA and too high roll center. I`ve talked to a few guys who ran them in autoX and track days who reported some suspension jacking and porpoising in constant radius corners. You`d get much better results from our tall Precision Series ball joints selected for your application. They`re less expensive too. :) Mark SC&C