if you insist.

Note that the 6 degree advance curve is pretty darn close to the 3 degree retard curve up to 3700 where it loses a tiny bit of ground (but gains tons compared to 12 retarded). Above 4500 it doesn't matter and the cam remains at full retard.

I'm willing to forgo the 10 hp difference from optimal for the 40 hp difference gained by using suboptimal.