Simon Dann at firstname.lastname@example.org
is a good contact for Pacific stuff (DD Pacifics) and has been very helpful to me.
I have just completely rebuilt a Pac 22 that has a Ford Sabre 250 BHP diesel and Hamilton 273 Jetdrive. In my opinion, the Pac 22 is immensely strong and over engineered and carries a lot of weight. Its sea keeping is very good. I wouldn't have said it is much of a speed machine, but if you are taking the inboard engine, gearbox and stern drive off, you are taking a lot of weight away. I have not tried one with outboards so cannot comment on handling and speeds etc, but I do wonder what impact it will have on the handling moving that weight out from rear 3rd of the hull and then hanging less weight on the transom. I wonder whether the handling will be affected. Several people have done this conversion on the site and I am sure will be along shortly to proffer advice. Good luck with your project.