First, I'd fax/write PB&F direct using the contact info below and
ask their advice for a design.
A diesel inboard is NOT easily adapted to an existing light outboard
design. A box keel such as suggested in a previous post works
nicely but must be well designed to work.
Non-Bolger boats that may work for you are in the Redwing series.
You'll have to piece together the broken link above.
--- In firstname.lastname@example.org, "edrapela@..." <edrapela@...> wrote:
> Bolger uses something similar in the Alaskan cargo vessel as well
> Diesel launch. Both can be studied on the Bolger Cartoon site.
> - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA,
> (978) 282-1349