I have checked out a few Japanese tuning mags and found quite a few 20v's running staggered 264 VVT intake and 272 exhaust. Can't confirm lift at this present moment though.Toda Cams. My friends 272 toda intake cam has the oil through hole for VVT, though VVT not running on his car.
Having a look at the Tec-Arts website, they offer a balanced and Tec-arts modified Blacktop 20v crank.
Knife edged on the conrod side, and balanced.