if i had said car and it was a stock base model no gt rs or anything what difference would the following parts have on mpg,hp,and value?if it matters the car is a 5 speed not an auto
1=cold air intake
2=warm air intake
3=stock to electric fan
4=turbocharger
5=unhooking/removing a/c(thinking mpg and power not value here)
6=spoiler
7=underdrive pulley system
THANKS!