???? for the motor heads
Timing - get it to idle with about 15* BTDC, keep feeding timing, keep idle constant, until rpm stops increasing. Get a reading. Or do it with a vacuum gauge, RPM constant feed lead until highest vacuum is reached with least adv. Back out 1" by retarding. If the engine will start when hot at the highest lead point, then lock it down. If not back of 2* until it starts.
My friends build was very similar except ede heads that were only mildly cleaned up. Made about 450-460hp with a victor 340. At 3200# or so, it should run in the 11's pretty easy, low 11's. His car ran 11.79 with a REALLY bad tune in Vegas.