Any help identifyin this trans?

those are casting numbers, i think what you really need is the tag number. i'm also assuming you identified it some how ( input shaft snout diameter is .668 vs .590 for a 4 cyl ) as a v-8 trans.....

if it's a world class, on the front of the tranny, where the in put shaft is, on the lower left corner theres a bearing there, it's different than a non world class, some one in here may have a picture of it.....or try this site; they have a pic of it.
http://www.5speeds.com/t5/index.html