« Reply #3 on: July 24, 2014, 11:30:03 am »
A buddy has a good 14 ff that he will sell me for cheap. He sais it came out of a 1970 k20
To my knowledge, unless the 14 bolt was swapped, a 1970 K20 would've had a Eaton HO52 rear axle or a Dana 60.
You might measure the distance from the center of the spring pads on each axle also the total widths to make sure you don't need to move spring pads and of sufficient overall width.

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1973 GMC K2500, Super Custom, Camper Special, 350, TH350, NP203, 4.10's
1974 Chevrolet K10, Custom Deluxe, 350, SM465, NP203, 3.73's
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