Worth the trouble? (Rear end swap)

[70's luvr]

I've got a 1970 2500 with a Dana 60 (4.10) that needs brakes ,wheel cylinders and axle seals (on one side so might as well do both). I'm putting in a 700r4 (pulling T400) and wondering if it's just cheaper to put in a used 14 bolt that's in good shape (3.73-8 bolt) that will match with the new trans better. I can get it for 100-125$ but it's 1" wider on both sides(67.5"). Will that be noticeable/an issue with tires? I'll add that I need to put 9/16" studs in the Dana to match the newer front end I just bought(66" wide).

The spring perches are the same width bt I'd have to deal with at least one shock mount being moved.