[Blown353]

If you want to run bank to bank injection (and it works fine), then your MSD distributor is fine. However you really should rephase the reluctor to rotor relationship such that the FAST receives the signal from the falling edge of the pickup at a crank lead angle of 55-60 degrees BTDC (ideal for a FAST) but then you want the rotor pointing directly at the cap terminals at the timing required at your peak torque/cylinder pressure to reduce the chances of a misfire. MSD sells the adjustable reluctor wheels.

The FAST distributor already has the reluctor to rotor relationship set internally at a 50 BTDC crank lead, and also has a 1x per rev cam sensor output so you can run sequential. The Accel Dual-Sync distributor is the same sort of thing however it has an adjustable rotor so you can easily alter the rotor phasing, however it requires a little bit of re-wiring & connector swapping to work with a FAST.

You can run sequential with an MSD distributor and a FAST, however it requires a crank trigger also. You clip all but 1 paddle on the reluctor wheel in the distributor so it serves as a cam sensor, and the crank trigger does the rest. This is more accurate than having the distributor signal everything as you don't have to deal with distributor gear lash, cam twist, timing chain slop, etc all bouncing the distributor around and leading to inaccuracies in the signal to the EFI box.