You can't remove the washers from the old bolts and fit them on the new bolts.

The head bolts you'll need are determined not by the block, but by the head. There are, as far as I know, only 2 different types of bolt - why Ford list 3 types, I don't know.

For the 2 types, the only difference is the diameter of the washer - commonly refered to as either being "large" or "small". Measure the diameter of the washers fitted to your engine, and give one of the recognised traders like Woodford a ring.