Cold Air Intake???
#4
I've always argued that they are an improvement. I've gotten better mpgs with all 3 vehicles I've had them on. Better sound inside. But the mpg gains on that old of a truck that probably gets 12 mpgs isn't going to even get probably .5 mpgs more. I gained 1 ish but already got 20+. I loved the more aggressive sound on all 3 tho. I would say in your situation, not worth it.
#6