Novak Conversions Jeep Wrangler JK shifters

2008 3.8 throttle enhancer: which is best?

It's all about turning your brick into a race car, man.
Not really. It's also about not turning into a rolling road block. That may not be an issue if you're in the flatlands, but it certainly is in Colorado.
We all should have gotten Corvettes instead.
I'd change "instead" to "as well"... I have a C5 making 850HP. You can have more than one toy. :)
 
Novak Conversions Jeep Wrangler JK shifters