Give me some suggestions here..

 

I dont think you should get a CAI. I'm not a fan of paying almost $100 to get a 2 hp gain. Out of those four choices I would get the short shifter.

 

I would say shifter as you use it all the time and the stock one feels like rubber compared to the aftermarket ones.

 

speaking of puny things. Today I saw the Diablo sport predator tuner in person and the thing is HUGE. I see all these pictures online and they look all small and stuff I never knew it was so large and bulky. Anyways that may have been a little off subject but I think you should go with some x-pipes and the shifter is 2nd on my list.

 

I would go with the shifter, my second choice would be a cai its only like 80 bucks on ebay and it adds 5-7 i think although it claims 10-14. :dontknow: