Finding a good mechanic who knows the car, and how to safely do these mods (braces, exhaust; San Diego/Temecula) will be as golden info as anything.
Or... club/group people who do it (right).
Cost isn't an issue with me. Finding the right mechanic who won't damage the car in the process... is.
There is a big Kappa group in San Diego - https://www.facebook.com/sky.solstice
Also check-out our West Coast Kappa group - https://westcoastkappacar.club/
2008 GXP Aggressive Red - SOL LVR - Trifecta custom tune - DDM CAI/charge tubes/silicone hoses - Werks IC - Solo Hi-flow Cat/Mach Shorty exhaust - DDM Probeam/Backbone/Venom brace - Short throw shifter - Full LED conversion - Michelin Pilot Sport 4S