4.8 5.3 ls engine bolts, fasteners, hardware

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I have a 5.3 engine and 4l60e transmission out of a 2006 Silverado. Problem is I need some hardware and I really don't know where to buy except from the dealer. Does anybody have information on the bolts which fasten the tranny bell housing to the block, starter bolts to the block and A/C compressor mount bolts.

I don't mind buying from the dealer but was hoping there was a parts diagram or fiche available, just so I could do a little checking on my own.