Installed them! And yes. there was only minor surface imperfection, not holes! Works nice now. I´m very pleased with my combo: 440 030", ~10:1, 452 heads milled to 69cc, ported in 270 cfm/0,5" lift, 67% ex, std size ferrea+K-line. comp xe 274 + magnum rollers, Torker II+750 speed demon, 2" CPPA...