Ya i was checking out the prices last night and it is a HUGE difference. Now i'll have enough money left over to finally get tires so i can put on the new rims i already have. thanks again.

 

All 1GS and and 2GS front upper arms are interchangeable. The thing I hate most about the 2GS upper arms is that if you have to replace the ball joint, you have to replace the whole arm which is ridiculous. I switched the the adjustable SPC front upper arms, not only for the adjustability but you can buy the ball joint separately in the future if needed.

 

What's the "official" difference between w/ sport suspension and without? Moog and others list different part numbers, at least for UCA's.

 

I'm not getting what you mean by "sport suspension"?

I don't think any of the GS' come with any special suspension. Even the sport design it's still OEM suspension. Only way you can make the GS more sporty is if you as the owner go and replace parts like sways and under braces etc..

As far as I know at least..