OR Parting out 72 GMC K20 4x4 350-TH350

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Oh boy, now I don't know which crank pulley I need. I will definitely take the short water pump pulley and probably the 2 groove cast. Did the 72 use cast though? Also, in that above pic, is that a new parts truck? If so, how much for the door mirrors? :-) I'll let you know later today about the rest of the parts. I could also use the wiring for gas tank and dome light