I purchased this 1990 LX convertible last spring. I noticed that it had steel J rails riveted to the length of the underside of the rocker panels. Once I got it home and looked closer at these rails I realized these were not factory. Who ever installed them didn't make sure the rivets pulled flush. I did see photos of one other convertible that had these rails with the same type rivets. Is anyone familiar with these J rails? Are they an after market item or some home made solution to stiffen the body? I'm considering removing them and have the holes filled (If I can find a body shop capable of doing a good job) Any suggestion, thoughts??