Originally Posted by solidus

The absolute cheapest and most felt and observable difference you can make at one time is swapping out the 7AT pumpkin for a 6MT pumpkin for the gearing. Nothing else you do NA will have such an immediate effect that you can feel as soon as you drive away. If you want to get pretty with it then get 3.91 gears or 4.08 installed on your own pumpkin. When I had my G coupe I paid 300.00 for a used 6MT VSLD and slapped it in. My car was tuned with FI RHFC's, Motordyne resonated Y, Motordyne M370 Manifold, Ark Intakes , Y back exhaust and a PST Carbon Fiber driveshaft with aluminum yokes. The only thing I needed for full bolt was headers. Of all those mods the gearing was the one I would do if I could only have one.