Does anyone have any insight into this dilemma. My 87 F250 Fwd appears to have the pre 87 type routing that follows the left side frame rail to the rear axle and front appears to be correct as well . This truck has been in the family since new so I know the routing hasn’t been changed. Btw for those interested it’s page 119 in the catalog and I’m looking at std cab long bed sets and further don’t understand why a difference in 2wd vs 4wd .