I second the Airaid intake tube. Just swap out the air filter for a flat K&N oem replacement also.
The strut/shock tower braces are cheap and easy (minor but effective improvements).
I'll suggest replacing the front/rear sway bars with adjustable ones. Same with the shocks/struts (I like Strange Engineering over the Koni's).
If you do anything with the exhaust, always get the stainless steel stuff.
Other than that,
Biggest difference will come with the rear axle: Ring/Pin (3.55-mostly daily driving, 3.73-Fu6k it!), axles and diff aren't bad idea to replace, and all you'll need is a speedo recal from Hyper Tech.
Good luck, have fun.
'11 V6...all stock...I swear...