The RAS shafts I use with my Hughes rockers also have upper and lower oiling holes, but I have never noticed a low-RPM oil pressure issue. Never used any restrictors with the previous Stage VI heads, but have .090-ish restrictors with the current Victors because the oil feed passages of the Victors are bleepin' huge.
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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