Is the intake worth fixing?
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.