From what I understand, the cold air intake would not be a problem but the tuner probably would be a problem.
When I purchased a tuner from Brenspeed for my 06 GT, I asked if it could also be used for my girlfriend's 05 Roush. The answer is NO.
Our cars come with different factory settings (codes can be found under the hood), that you have to give to the tuning company so that they can optimize the tune for your particular code set up. The tuner automatically downloads the factory tune when you upload a new tune to your car. If you use a "used" one, then you may subject your car to a different tune setting that was designed for a completely different set up, and could cause major problems with your car. If your factory setting gets lost in the process, then you may have major problems.