I was thinking about putting dual exhaust, cold air intake, and the sequential kit for the tail lights. Any specific brands or any comments would be helpful and greatly appreciated
Exhaust is all about preference. I personally prefer Flowmaster on the 3.8s. I have Flowmaster 44s and and O/R Xpipe. I love how mine sounds but its all about taste. You can try Magnaflow, Flowmaster, Pypes, and theres others, but YouTube is a good place to start checking out sounds. Cold Air intake you can get BBK, which i like. Tail lights, im not sure about but check out AmericanMuscle.com.
for the tail lights i would suggest going to webelectricproducts.com as they are the only company that makes the kit that doesnt cause the brake lights to be sequential (illegal) only turn signals (legal)