Cheapest option is a good cold air feed and good filter not necessarily a pod either!! Then a good exhaust system, proper tuned length extracters to if you can afford them. Then id say a computer, then cams and head work then individual throttle body injection, then crack the motor start reworking things, stoked bored, cross drilled crank, knife edging the list goes on.... Too look good just put on some nice biggest you can get wheels and lower it that should do any car some justice