[DeTomaso] Tach adapter help

After over thinking this… I’ve stalled. I’m currently running a complete TerminatorX EFI system with DualSync distributor and MSD 6efi ignition box and coil. At least 3 adapters are available. The Holley/MSD 8920, 8910 or 8910EIS. Anyone here have experience with this? Brain fogged and electron challenged. Michael Sent from my iPhone