I HAVE A LINE ON 2 REAR ENDS BOTH ARE 9inchs. THE ONE CAME OUT OF A MID 70'S F150 THE OTHER A 1982 F150. ARE THESE GOING TO BE TO WIDE OR SHOULD I LOOK FURTHER. IS A EXPLORER REAR END A BETTER OPPTION FOR THE F1.

THANKS MARK.......

 

Both will be too wide for an F-1. The Explorer is about 59 inches which is close to the 61.25 inches you need for the F-1.