GM part numbers

Starting my LM7 install into my 56 Chevy and I need some factory parts to do the swap. OK, I know I can get a better deal on factory parts at numerous online parts distributors, but the problem is that I have to have the parts numbers to get a price quote. Is there a place that I can get illustrations of the F-body LS1 engine and the C5 Corvette suspensions? In my research I found a reference to the Vette Dr., that he had a CD with all of the illustrations for modern GM vehicles, but I can't seem to find it. Short of going to the dealer and bothering the parts guy, where can I find this info?

id say call the dealer and bother the parts guy, that is what he does for a living, its not like your going to catch him in the middle of a load of laundry, chassis gm factory part numbers are hard to aquire except from the dealer.