[socalsilverRL]

FAQ CONT'D:
Q) Can I put a 'boost controller' on the LSJ?
A) Short answer, NO!. This is not a turbo car.
Long answer, the only thing a MBC or EBC would do, would bleed off the pressurized air going to the boost solenoid so that the bypass valve in the supercharger never opens. You can effectively do this by removing one of the lines going to the actuator (I refuse to tell you wich one, because it really doesnt do anything other than damage your engine).

Q) Are there differences between the stage kits for different model years?
A) No, all of the stage kits are physically the same. Once the dealership installs the kit, they must contact GM for your 'calibration' tune. Only the tunes are very slightly different.

Q) Are there differences between the '04 redlines and the '05-'07 redlines?
A) Yes. The 2004 Ion Redline is a special breed. The have a few things that will NOT interchange with the 2005+ MY. For example:
1) The Vehicle Speed Sensor (VSS) gear on the '04's is located on the intermediate shaft, whereas the 2005+ MY Redline has the VSS located inside the transmission. This is what mainly affects tunes between the '04 and '05 MY, due to a difference in tooth count on the VSS. The VSS plays an integral role in the injector and IGN timing cycles.
2) The front transmission mounts are NOT interchangeable. The '04 has a completely different front transmission mount that was redesigned for the 2005+ MY. If you were able to get the subframe from a 2005+MY, then the transmission mount would work from the 2005+MY. The difference is in the subframe, not where the trans/engine sits.

...other than a few interior items, the rest of the car is he same for the rest of the MY.