Anyone using SB Lunati cam ending in 703 Part number?

Oh boy....
You will have to create a new TDC mark on whichever side you want, or has easiest access.This is pretty simple. You don't even have to use either factory markers
So to start, the engine has to be at TDC #1 or #6 , as determined and set with a piston stop. Then you can observe the balancer mark and put a new index mark on the cover adjacent to it. Or you can mark the damper adjacent to the cover mark. Or you can make TWO marks adjacent to eachother any where you want to; one mark on each part the damper and the cover .Now you have a TDC mark.
Finally;now you can install a timing tape, which is a great aid to set the valves, to make setting the power-timing easier with a conventional light,and to configure the rate of advance, etc.