You didn't happen to buy your car out of Red Bank/Rumson area did you? Anyway, as for as my driveshaft, I needed it shortened couldn't find but one person to do it. Eventually called up CJ and ordered a shortened version from them which seemingly is pretty good. I would see if you could call them and see if they could do something for you.
Bill, I had the driveshaft for the Daytona shortened/balanced by a shop in Bound Brook. Not exactly the area you are looking for, but they did a nice job on mine.