FS ignition timing

[fresnoron]

My motor is basically stock with a lion speed 4 head and headers....internals are all stock.....I installed a FSI electronic distributor (not the zipper) and been running it at that for a couple years, but would like to fine tune it...they say to set initial timing at 0 then advance till it pings, but was wondering if anyone has an idea what should be the initial timing. Im at basically 300 ft above sea level here with a 31 sedan.... anybody with words of wisdom here.