I have a '99 TJ and want to install new front seats. Everywhere I look it says I have to purchase a separate seat bracket for TJ's. I read a couple of places that it is due to the change to metric beginning in '97. Several people mentioned they just re-tapped the threads. Can't new metric screws and bolts be used from the original risers/seats? If re-tapping, what actually gets re-tapped? I am already 6'4" and don't need the additional height (or cost) of a new bracket if I can just reuse the current one. Thanks in advance for any thoughts.