If it is a pre 70 intake and all that is wrong is the broken bolt?
Absolutely.
Soak with PB blaster, drill and easy out. Repeat as necessary. Used to repair those intakes weekly. It can be a PITA, laborious, tricky...It is a $25 bill at a machine shop.
If you don't want the intake, I will buy it from you.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.