Body bushing OBS/NBS Interchangable?

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Chevy666

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Hi!
I have a 89 K1500 4x4 and it's need of new body bushings, the problem is that the previous owner used lifting blocks and threw away the hardware so I'm in need of both bushings and the metal hardware for the bushings. So I've been looking for the hardware and found used NBS hardware for a good price but does anybody know if they are interchangeable with the OBS frame/body? Saw somewhere that the frame mounts on the NBS are leveled on the NBS while the OBS mount nearest the bed are higher than the two other mounts (it's an extended cab). The NBS body mounts from prothane/energy suspension looks to be cheaper than for the OBS... No stranger to metal fabrication so if someone knows if it's possible I would be really greatful for some feedback.
 
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