[christianchevell]

option one should be cheaper than option 2, option 2 to do right would mean a upgraded eaton posi, then why not since your in there the lpw cover and some new trailing arms and toes and upper a arm bushings and poly bushing and why not sways...and the tune is just to adjust the speedo... but ,most likely you will feel the seat of the pants better on a 3:91 swap but the sound of heads is nice....but to tune is to void the warranty for headers...but can take care of annoying things in the ECU like torque management, throttle delay, skip shift, etc etc.....