I am not sure if the cabinet changed dimension over the years, but mine is a 1988, and I see some discrepancies between your drawing and my dimensions though. For example, the top of my cabinet is only 13" wide and yours appears to be 16", but also it is 65" long and your drawing shows 58". But on my boat, the top extends past the port side bulkhead in your drawing all the way into the storage compartment on the port side of the galley. On the forward side, mine is only 50" wide, but your drawing shows 58". So in other words, mine is 50" wide, 18" tall, and 13" deep, but with a top piece that sticks out on the port side that enters the storage area, and acts at the bottom of it, all the to the hull.
I am not sure if this helps or not.