Thor,

Any modification will be dictated by your intended plans for the car. Will it be used as an everyday car, Driver's ED car or a Club race car? Your latest statement leads me to believe it may be used for some tracking, but why the 19's- unless you will be using your 18's for the track.
Their are plenty of properly set up 996GT3's around, so asked plenty of questions. Do a search for past discussions on GT3 setup, plenty of info on this board.
-z

 

will it fit in a 997? some of you posted yes... others no???