I found a couple of cracks while I was cleaning it.
This one is from the installer not pre-drilling the intake to provide relief for the locating dowel.
This one is from someone using bolts instead of studs for the carb. After the orginals got stripped out, the PO re-tapped for the next size up. He then overtorqued and cracked the boss.
Both of these areas can be fixed by someone with a TIG welder and the intake will be priced accordingly. Let me know if you're still interested.