Kirk,

Not certain why they call them turn-in spacers as I can't visualize how they change the ackerman. I only 'see' how they can plot your roll-center in a better area when the car is lowered.

More info at: www.gforceengineering.net/products.html

about half way down the page are the spacers in question.

Daryl,

I would try it w/o changing your spring rate.

1) you've raised your roll center and therefore don't need as much spring.

2) One change at a time

3) I have not found any West coast road race track where more than 2 1/2 degrees negative was needed(faster)in a 1st gen.

All cars have various strenghts and weaknesses. IMO the Rx7 is a very strong braking car(vs. other ITA cars), too much negative camber hurt my lap times more than not enough.