Can anyone tell me if the frame is different between 2wd to 4wd. Im asking because i just purchased a 75 f350 crewcab and im going to convert it to 4wd. It looks the same the only thing that looks diferent is the mounting for the 2wd verses the 4wd. HELP!!

 

I don't know if it's a 2wd vs 4wd issue or a question of different years but me and a buddy pulled a fuel tank out of a 2wd and tried to put it in his 78 4wd and it was too wide. We measured and the 2wd has a wider frame. ie. the rails are further apart. You might want to measure them.

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