Hey just wnated to let everyone know that if you plan on installing a BBk T.B. on your 05-07 Mustangs its better to have a dealer do the mod for you. The directions BBK sends with the kit is pretty simple to say the least. I think they should have been a little more in depth. I am sure now most of have seen the video that MuscleMustnags and fast fords have put out with there mag from Ford Racing. Well its not as simple as that guy makes it sound. There is no special tool that comes with the klit to put the spring tension back on the spring. Guess what there is not a parts break down for the spring by the dealer as well. They call it throttle body assembly. I know what your thinking its on 4 bolts and a few screws..take it from me installing the sensors on the BBk is a pain in the butt. I just called AAA to come tow my car to the Ford dealer. This Wed I am going to a diffrent dealer to have them install the part.