The numbers are on the side of block, big cast numbers, can't miss them. From there you can do an engine code number check online, pretty easy to find several sites with them. Nice green, love it. Check your other post, talked about the lifters there, and as usual, it is your car. There are lots of ideas out there, restification is nice because it doesn't damage the car or allows anyone in the future to return it back to original/restore if they want.