Might be cheaper to buy a OBS F350 instead.
If you find a Dana 60, you MUST get the lower driver side u-bolt bracket. You'll also need the trac bar bracket and front x-fer case yoke along with the front driveshaft. Highly recommend not using the F250 leaf springs as they are thicker/stiffer than the F350 one. Also, won't hurt getting the pitman arm.
Do a search, there is a ton of info on this subject.
Billy T.
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