Just got my New GroundForce GF6's put on today.
Running 245s in the front and 275 in the rear. (20x9.5 - 20x10.5)
Looking at lowering options, but also somewhat on a budget.
I'm interested in dropping 1 1/2 - 2 inches, suggestions on springs to order?
Also places in Southern California, Orange County to get them installed?

Thanks!

 

Nice wheel n tires pickup!

I'm wanting a small drop as well. I've been told that swift springs are the best springs for our rides. Supposed to give around a 2" drop too

 

Best budget drop would be Tein Basis Coilovers, these use the OEM top hats from your front shocks so that eliminates one source of noise common w/ coilovers & Tein is a quality Japanese company. These are also coilovers that are a mild dropping coil, not to be slammed, so perfect for your needs.
They sell for about $600, here's more info and THMotorsports is a good on site vendor
TEIN Street Basis Coilover Kit; OEM Front Upper Mount; OEM Rear Upper Mount; Not EDFC Compatable INFINITI G35
And info on the set
TEIN.com: STREET BASIS - PRODUCTS