Not much other then them being very impressed that it made as much power at the wheels as it did. He said most "old school" cars that come in here with stroker small blocks rarely make much over 300 hp at the wheels. Nobody gets more mad than guys with old muscle cars when they dyno 100's less HP than they think they should. When I got there he asked me what I thought it was going to make I said "anything with a 4 as the first number", I could tell he almost rolled his eyes. But after the pulls he was impressed. I should have tried advancing the timing but with closed chamber heads, 12.3-1 and pump gas I figured I could not go any higher anyway. It may be worth a try.