All you need to know about the differential:

https://www.crossfireforum.org/forum...rt-6-a-65.html

CAI is cold air intake.

The stock intake is pretty restrictive.

Unless you plan on doing a lot of Drag racing, you might be able to get by with the stock gear.
But if you plan on side stepping the clutch pedal during your launch, then by all means look into a Wavetrack.
Oh, and replacing your clutch on a regular basis. Along with the motor mounts.
The Crossfire has a 2 piece drive shaft too, and I doubt if it would take much punishment either.
I guess what I'm trying to say is, the 6 speed cars don't make a great drag car. They're quicker (in the right hands) but the automatic cars will take more abuse than the 6 speeds. There's a reason Mercedes Benz only uses automatics on their highest performance cars.
Don't get me wrong, I dearly love my 6 speed, and I enjoy hole shots as much as the next guy. But in 9.5 years of ownership, I've never "dumped" the clutch on my car. I've never felt the need to, to get the most out of my car.
I know I'm sounding like my Dad, but even in my avatar, my Crossfire is doing what it does best, taking on the Dragon. My other car is at the Dragstrip. (It's an automatic).