23' inboard owner

[jesusv]

i am the new owner of a 1977 23' inboard CC. i will soon be posting pics and telling more about the boat as i go through it a little better. always heard great things about it so i when ran across one and got a good deal on it i didnt hesitate. the only other boat i have ever owned is an old 19' mako with a 115 on it. so hopefully i didnt make to big of a jump.
so i have a couple questions what is the draft on this boat?
i thought i saw on the specs somewhere online that it said 28", i read on forum someone said 18-20"? secondly, my HIN starts with sec but the fourth letter is an A not an f like others. anyone know what the A stands for?
thanks guys.