Mystery boat with 25 hp Chrysler engine!

[pirate3897]

I am hoping the engine Id will help lead me to what kind of boat this is...pics to follow!

Chrysler 25 hp with the numbers...252HB and 9872

Tag is scuffed, kinda goofy since it is under the shell

I would love to know the year and related specs for this engine...will post pics of the mystery boat with my first reply!

A friend and I rescued this from the pasture, gonna have to tear it apart...two piece fiberglass shell, catamaran style hull..

It is about 8 1/2feet long, looks like a one seater...Any Ideas?