Hi,
i would like to know the differences between different gold seals units: for example for the innocenti 1300 export original engine was 12h719/832 and the gold replacements were : BHM1209E (1275cc - Gold Seal unit, replaced all Innocenti 1300 engines from engine numbers
prefixed 12H610, 12H635 and 12H832)
GSE1109E (1275cc - Gold Seal unit for 1300GT (ADO16) and Innocenti 1300,
11- stud cylinder head)
or 38G559E (1275cc - Gold Seal unit with Simplex cam drive gears for engine numbers prefixed
12H719 and 12H832, for 1300GT (ADO16) and Innocenti 1300, 11-stud
cylinder head)
Anyone may tell me the differences between theese models?
In GSE1109E and 38G559E is specified that the head is "11 stud", but what about the BH1209E unit? 9 or 11 stud ?
I'm asking this info because i found an innocenti 1300 with this engine but i suspect that the head is not the correct one.
It is only 9 stud and i can only see "10A3" label (as in picture).
Thank's in advance to everyone and sorry for my poor english 
