The engine number is on the front of the block above the water pump, will start most likely with JK, not all cossie blocks were 2222, printed next to the dizzy clamp, some were 3's, mine is 3233.
I can't help with the year as some 2wd sapphy fitted with 3 door engines from the RS500, ie original 3 door engines later used by ford on the sapphy 2wd.
tabetha