Here is how I interpreted the 2010 Camaro specs...
1LS comes with 18" Heritage Steel Wheels
1LT comes with 18" Painted Alumimum Wheels
2LT comes with 19" Painted Aluminum Wheels
1SS and 2SS come with 20" Painted Aluminum Wheels with Sterling Silver Finish
RS Package includes 20" Midnight Sliver Painted Alumnium Wheels; somewhere I read one can optionally get (20") Polished Wheels (for extra cost ??)
Q9B Package (for 1LT or 2LT) is 19" Polished Aluminum Wheels, cost is $???
Q9J Package (for 1SS or 2SS) is 20" Polished Aluminum Wheels, cost is $470
So, as far as Wheels go, anyone ordering the RS Package has to pay something extra to go from either 18" or 19" wheels to 20" wheels, or from Painted to Polished Wheels (similar for Q9B or Q9J Packages, Polished Wheels are extra...an upgrade from Painted).
I took the simple route myself (
), did not order the RS Package (
) but ordered the Q9J Package instead!