I assume its a chevy and not a GMC. You can buy a after market replacement fan shroud as far as the fan goes you will have to measure the opening in the shroud as GM used a bunch of different size fan blades and for the spacer will depend on whether you have short water pump or a long water pump.
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James
63 GMC V6 4speed carryall
65 chevy swb bbw V8 auto
68 K20 327/4 speed, buddy buckets
2002 GMC CC Dually Duramax
64 GMC lwb 3/4 V6 4speed
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66 GMC swb bbw buddy buckets SOLD
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The only thing that stays the same is constant change!