Hello Andrey. I tried to read your thread with google translate and it is a very nice project with the C&B cams and custom flywheel. I didn't understand your question at first but then realized "corner" is "angle" (I'm from the Netherlands by the way). Your custom flywheel doesn't have the markings for static ingnition advance and maximum advance but you could copy them from an 8v carb flywheel if you have acces to one. Otherwise, according to the Haines manual, latest carb Sud boxers had 8 degrees static advance, 22 degrees at 2000 rpm and maximum advance from 4500 on is 36 degrees. The original injected 16v has a maximum advance of 34 degrees. A few degrees advance more gives some extra power but it depends on the quality of fuel you have if the engine can take it, so it takes a little experimenting.
'08 GT 3.2, Sud '82 QO, '76 Ti, '75 L, Montecarlo, 308.