I had to go back and look at the records of the kafufull all over again from the 1970s. My notes from stock years put the electric start Mark 55Es port timing above the Mark 55s and within .005 inches next to the Mark 55H. In inspections the Mark 55Es porting was comparable to Mark 55Hs. Fully half of the Mark 55H blocks here supplied by Merc as replacement blocks for D-Stocks were Mark 55Es. They were all legal and competitive with 55Hs and 55H-1s.

I really must be more precise for some of you, do I?

Of course, especially those with very plain agendas.