notchback26

hi im 18 had my notchback a little over a year.. and now have about 1,000 dollars to invest towards it.. I really would like my car to be fast... like if any little jdms pulled up next to me or something i would like to be able to do well.. everything in my car is stock.. besides the fan its electric... and i have a 302 engine ... i was thinking about getting a GT-40 intake.. but i don't know what heads would be good... what cam is good also ? last but not least i want to swap out the magna flow exhaust system for flowmaster.. is this a good choice? feel free what other upgrades would make a difference...
thank you!