I think they originally had Packard engines in them.

Great info here: http://www.ptboats.org

Details on the boats, including history, design, and power: http://www.ptboats.org/20-01-05-ptboat-001.html

That thing is cool, I would lose the torpedos and put up a life line arount the deck, a period one like on an old sub so it would not look tacky, then head to party cove!!

Now thats a big Ocean Racer !

here ya go
PT 728 is owned by Bill Bohmfalk in Florida. It is a Vosper that has been restored in the fashion of an Elco. Bill had it in a Special History Channel show, "The Great Ships - The PT Boats". It's a well done documentary on PT Boats. You can get a copy from PT Boats, Inc., (901) 755-8440 for only $19.95 complete with shipping. Recommended viewing.

I was talking to him about it a few years back in KW.I think it was him, It's far from original. it' s been cut down in length and the engines are not original.