I don't post much here anymore but felt a good report on a part was worth it. I just got home from dynoing a customers 540 Indy ez head motor. I used a 1050 Ultra Hp dominator from Holley. Out of the box. WOW! Idles at 900 Rpm, super responsive, Tons of adjustability, LIGHT( they are aluminum). Easily the best OOTB dominator I have ever had my hands on. Well done Holley. Not cheap, but very, very nice. Motor had great power and the torque curve looks like a pool table.
FWIW