How can i get more power out of my 350 vortec 1999 c&k pickup.?

i have put a chip on it i am bout to by an after market mass air flowe sensor from jet. but i would like to know if there are still some other easer and cheeper ways to hop up my motor. soon i will be replacing the rear end and getting all new gears. i am also getting a shifter kit as well so that i can get rid of that first inetial lanch form 1 to 4. and i got a throtel repons sensor for my truck but have not put it in. if some one out there has any idea on how i can build it up more for cheap i would be vary gratfull.