Part number question

[mrss]

Sorry if this is posted in the wrong spot.
I am dealing with a person who has a 71 454 Ls5, my problem is the heads were swapped but I dont know about the block.
The customer sent me these photos,can someone tell me what the part number is for?, I think it might be an intake manifold.http://img.tapatalk.com/d/12/11/02/qybu7yse.jpghttp://img.tapatalk.com/d/12/11/02/gu9edazy.jpg

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[Hank70SS]

If the part # is 39310657 it's a long neck water pump. I'm not sure that's what the number is though, pretty hard to read.

[Hotrodcort]

If the part # is 39310657 it's a long neck water pump. I'm not sure that's what the number is though, pretty hard to read.

I think your right. That's the number I read as well.