Chuck. I believe Barry is alluding to the new design 'short' cover and rear sump oil pan that's being developed to make the Y an easier swap in those early vehicles that have been accustomed to getting
scrub engines. This new cover is suppose to use the standard Y water pump but allow the use of aftermarket dampers which have typically set too far out on the passenger car applications for proper belt alignment. I don't have any other details on this new combination but I'm assuming it will likely use the same oil pan gasket as the marine version.
Maybe Frank can chime in if He's got some more details on this.

Lorena, Texas (South of Waco)