Here's a list of GM licensed parts suppliers and info
http://gmparts-legendarylines.com/licensee_list.pdf
Bryan-NW 'burbs1972 MalibuVaguely stock appearing, and the opposite of restored.1999 std bore 5.7, Vortec heads, Holley Stealth Ram, GM cam700R4, Viking coilovers, 12 bolt 4.10 posi, and a whole bunch more