Hey guys. I have a 93 gt. I have about 300 bucks to spend on something. I want more power out of it. I already have underdriver pullys, cold air, headers and catback exhaust. What could i do for 300 or less to make decent power. Or also some basic adjustments to make some better power. I have this guy with a 99 gt conv. talking all kinds of trash saying he can beat me in the quarter mile. I want to shut him up. Thanks