I've got this 4 barrel manifold that I can't identify. It's p/n is 3844459 I think. The last 9 in the part number looks like a '8'. But it doesn't look the same style font as the first 8 in the part number. Hope I didn't confuse anyone. So anyway the number is either 3844459 or 3844458. What's it go on? What is your master source for ALL GM numbers?

63-65 327 passenger car, corvette, chevelle, chevyII...4bbl,castiron,carter,afb.
thats what the chevy V-8 engine casting book says. 3844459