Just get a ZL1. Spending close to 50K for an SS is stupid. When you want to trade in the 1LE later on, the dealer will remind you that you just have a camaro ss with an option package. Of course when you buy it is a different story.
The other choice is to find all of the parts that make the 1le package (shocks, struts, sways, gears, etc) and buy a better aftermarket parts. It is easy to surpass the oem stuff from vendors on the forum.
1LE Diff (3.91) - 22806794
1LE 3.91 Gears only - 22813040 (fits SS and V6 manual)
1LE LH Axle - 22806795
1LE RH Axle - 22806796
1LE Front Sway Bar - 22812946
1LE Front Sway End Link (passenger side) - 22842515
1LE Front Sway End Link (drivers side) - 22842516
1LE Rear Sway Bar - 22786260 (same as ZL1, comes with brackets and bushings)
1LE Rear Sway Bar Endlink (2) - 22761221
1LE Rear Sway Bar Bracket Bolt (4) - 11518623
1LE/ZL1 Wheels 20x10 Black - 22798741
1LE/ZL1 Wheels 20x11 Black - 22798743
1LE/ZL1 Hubs - 22924741 (x2)
Finally get a tranny from texas speed or wherever with the ZR1 stuff.
A link to the 1le parts thread-
http://www.camaro5.com/forums/showthread.php?t=244570