Dave the guy in Jersey that had FVD do the 3.8 x-51 conversion and I have spoke many many times about this. Let me just say that the tuning was a little more then dyno time. FVD US could not get it done so they sent the whole car to Germany on their coin. If you have a 987 this would be much better then a 986. If anyone has anymore questions let me know. As of right now the sc and the 3.4 and 3.6 on the later cars are the best choice.
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