I've read dozens of threads trying to find the answer to this, but most seem to be discussing pairing it with the 6AL, Mallory distributor or upgrading older 240z's...

Is the MSD Blaster 2 coil plug and play for my stock '76 280z? (L28 EFI)

Do I need the MSD 8910 tach adapter and if so, where do I hook that up? Pics would be appreciated.

You don't need the adapter, it's for the Multi Spark Discharge (MSD) ignition module. But the Blaster coil might not be right for your 76 ignition module and ballast resistor. You should match the resistance of the Blaster coil circuit, with or without resistor, to the resistance of the original 1976 coil with ballast resistor.

Otherwise, you might have too many amps through your ignition module, or you might not be getting the benefit of the Blaster coil if you use the ballast.