nardeezy

Worst case scenario, if 06 AWD aftermarket lowering coil springs/suspension kit is not manufactured I want to look at my options.

I went on Tein's website and analyzed the spec's for the 06 300/430 lowering springs (S Tech, High Tech, and Super Street Damper). I found out that there is a correlation to ride height and spring rate. The funny thing is the Tein part numbers for the 300/430 are different. However, the spring rate and lowering heights are the same. Reference:

GS430
http://www.tein.com/ti/l78-uzs190l.html

GS300
http://www.tein.com/ti/l78.html

Does anyone know if the O.D. of the coil springs are the same for the 300/430RWD and 300AWD? If so, I can't find a reason why after market coil springs for a GS430 from Tein wouldn't work. FYI, I am looking for the minimum amount of lowering (Tein Luxury Master H.Tech). Opinions?

HKGS300

you may need to compare the rear suspension designs of the RWD vs AWD. These can be different and also may be the reason why the RWD parts may not fit the AWD.