If you use roger's optical set up, concider putting the target wheel on the cam sprocket.
I was going to put his tach kit on when I changed my pump, but you can't tighten the pump nut(s) behind the sprocket with the target on. And i'm not too keen on doing the pump timing, knocking off the sprocket, tightening down the pump and putting the sprocket back on.
i have to cut a new aluminum disk to fit the cam sprocket cause I had to trash the one in the kit taking it off the pump sprocket. It won't fit the cam sprocket either as the hub diameter on the cam sprocket is bigger.
its a nice set up, but if your in the habbit of putzing with injection pump, your out of luck.
Brought it to Roger's attention, don't know if he is going to do anything about it.