If your jonesing for some SOTPs feel right away and somewhat affordably get gears and/or a midpipe. If you got a heap of cash to burn superchargers are the best mod. I did almost every bolt on I could find before getting supercharged. After the supercharger, I wish I had supercharged first. Then piddled around with the minor bolt ons. If you do choose to do gears, there is only 1 reason to not get 4.10s. That reason would be a positive displacement blower. Wish I knew that when I started out.