Holley 4160

I have a Holley 4160 600 CFM carb manual choke , vacuum secondary single inlet.
I'm not a Holley guy . I showed it to Yellowrose who thought it looked pretty good. He rebuilds Hollies. What I do know is as per Yellowrose its a 2015 production carb. It came off a 79 GMC C6000. The carb functioned when removed but was cold blooded . We noticed that the front vacuum rubber plug was cracked and may have been sucking air. I think it just needs a good adjustment. I didn't clean carb , this is how it came off the engine. I'm asking $150. their $350 new. + shipping. From Yakima Wa. Lower 48 only.
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