gears
intake plenum and t/b or Bullit intake
suspension - no more 4x4 look
shifter
headers
maf
pulleys and timing adjuster
P&P heads and cams
supercharger
the list is endless
MAF wont do you much good if any , gears will be more noticeable than the plenum and TB , but either would be good . if you do gears dont for get the SpeedCal