Seams like a lot of things happening on the top and front of that engine? Curious...

Well if your dating a twin. Why do you want her sister. If you have a big engine in your boat why do you want twins? Just a thought. I'm sure the experts will give you a better answer. Just playing while I'm layed up bored. Artie

It was built prior to the availability of larger displacement screw compressors.

Then there is the undisputable bling factor.....

I always figured it was hatch clearance also