Difference in Ground Control camber caster plates?

[bmwpower]

I see 3 on their site:

http://www.ground-control-store.com/products/description.php/II=142/CA=8

http://www.ground-control-store.com/products/description.php/II=773/CA=8

http://www.ground-control-store.com/products/description.php/II=722/CA=8

I understand that the one is for SpecE30 and the other is for SCCA Street Prepared, but what is the physical difference? And what about the first one listed? Are there part numbers listed on the plates so you can tell the difference?

Thanks....

[318isbmw]

I think like you said, one is for spece30 and the other for scca. The difference in those versus a generic one, like the first is that they are made to specifically fit within certain rules and regulations on what you can run on your car. Whereas the first one you posted is just made to be a camber/caster plate.

[jlevie]

Why not call GC and ask them? I think the first camber plate is a generic for coil over. The second is a coil over plate tweaked for SCCA rules and the last is obviously the Spec E30 part for OE diameter springs.