looking for head identification

there should be casting numbers ,they are often hard to see as the rocker assembly
covers them you may need a flashlight. There is also letter codes located on the outside of the heads by the spark plug holes a U or J or if your lucky an X
x heads will have the big valves 2.02 and some J heads 2.02 valves I even have
a set of 360 U heads that have 2.02 valves. You for sure do not have to remove the heads to I.D. them. When you find the numbers post them and some one will
let you know what you have . Cheers.