ac suitcase id
 

Hi I am having trouble IDing an ac box . The only part# I found are by the blower on inside but there are two # one is 3013465 with a line through it looks factory , and 3016552
the outside harrison tag is eba 52b 73b then sae j639
I thought the part # is for 67 /69 camaro BB but I thought harrison tag dated to 1973 .
Any help would be greatly appreciated . Thanks
David