Installing Electroair on a 1960 210, working on photos and mods etc. we're waiting on new spark plugs, hard to say how accurate the 6 to 10 hours install is as we are working on other things and we are old and slow. Had to exchange the 22 Deg. MAP advance unit for a 20 deg one. ran the engine and it works well except it cuts out when switching from the mag to the Electroair, I assume this is because it must find TDC, I could be wrong!