Timing control yes/no ??

[WallaceMFG]

I've done timing control on two Fitech units, I highly recommend doing it. Ease of tuning alone makes it worth it.

With the Fitech unit, it just uses the points input on the MSD box to trigger the ignition. Because of this, I was able to keep the 2 step limiter on the MSD box functional. Your Mallory box may be similar, but if the EFI does the timing control you probably don't need the retard function of the box. The EFI should take care of that.