Engine Build For 1970 Duster

First and foremost when you're restoring an entire vehicle is to at least to get it on the road "keep it simple"..
The first thing I would do is ditch that EFI idea for now and just go with a simple carburetor... It will make things extremely time-consuming with a lot of work getting it all hooked up let alone the colossal expense... I've done a couple... Also did you know they don't recommend using EFI to break in a new cam with a brand new efi? When you break in a new cam you want to get it up to two grand plus RPMs right away and with an EFI you have to get it all tuned in itself and then hold a high rpm.... I called Holly sniper on this one and I believe it says it in the book as well to use a carburetor break in the cam if using EFI for the first time..
Second you tore down the engine to see what you have and if you cannot get the exact specs on that cam which I highly suspect you can't from those numbers on the end but you'd think you would. I would go ahead and either send that cam in to be reground to expect that you know and want or ditch it all together and get one that you know and want thing that was the reason you took the engine apart. To see what you had?..
My-2...