1. FRPP Gears(3.73 or 4.10)-$190+ install
2. BBK or Bassani Off-road or Hi-flow H(or X)-pipe-$180-$410
3. Steeda or ASP underdrive pulleys-$180
4. Steeda timing adjuster-$160
5. Pro 5.0 or Steeda Tri-ax short-throw shifter-$180
5. K&N Air filter-$50
These are about the only worth-while, affordable mods that will make a difference.
Then there is the '99 intake/head swap that will run you about $1000 in parts and about $750 for the install, but will gain you about 35hp. Well worth it.
Beyond that is supercharging($2800+) or Nitrous($550+)...
Not worth-while(N/A hp wise) but inexpensive mods include:
1. Aftermarket throttle body
2. C&L or Pro-M Mass Air Meter
3. Cold air kit
4. Aftermarket cat-back
5. Headers(also a PITA to install)
Things not to get:
1. Superchip, Diablo chip, or any other chip claiming 25hp. The only chip to get is a dyno tuned chip or JMS chip.
I may have forgotten some things, but this should get you started. I'm sure others will have some input as well.
Good luck!
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Travis
T-Bones 1997 Cobra#6342 born 6-11-97
Wht/blk, Pro 5.0,FRPP 4.56's, aluminum driveshaft, FRPP throttle body, C&L 80mm MAF, K&N, Steeda U/D pulleys, Steeda timing adjuster, Borla cat-back, BBK cat H-pipe, SFC's, FRPP pro springs, BBK caster/cambers.
My old 96GT