I am on the verge of ordering '78 Pace Car front and rear spoilers for my '79 from Eckler's. I am not sure whether I should order the one piece fibreglass front spoiler or the urethane 3 piece front spoiler. I am worried about the fit of both. Anyone with experience with either, or advice about either (or Eckler's), please, please reply to this posting. Also, do I need to order any kind of mounting hardware?