hi john, 
yes the valve covers are the saw tooth type. i also found on the timing cover the date of  9-6-64. i have a parts book for the 545 and it shows both types of engines, saw tooth cover and the newer straight one. it also shows that on the saw tooth engine that they used solid or hydrolic lifters, and i have removed the intake and can plainly see that the lifters are solid. i need to know what to set the valves at. a chrysler dealer said to try 10 and 20 for the intake and exhaust, but i am not comfortable with that. do you have any ideas? thanks for the help.