tach hook up?

Little more research done.

All of the aftermarket stand alone EFI kits have a tach output pin that should send a suitable signal to your tach.

But if you are using the factory ignition system it can be a bit trickier.

Fortunately MSD sells a tach adapter that will allegedly work with any msd tach.

http://www.autometer.com/cat_accessoriesdetail.aspx?vid=99

Best of Luck.

Regards,

Joe Dokes