[link=http://www.recpower.com/f33.htm]F33 Engine[/link]
[link=http://www.vortechonline.com/engines/]Used Engines[/link]
Lots of Info on the Skypup [link=http://groups.yahoo.com/group/Skypup-club/]Here[/link] and [link=http://www2.wcoil.com/~rford/]Here[/link]
50 yards of polyester dress liner needed, no dope (disolves the foam)
China silk would probably work, best is 1.8 oz. dacron [link=http://www.aircraftspruce.com/menus/cs/dacron.html]Here[/link]

Pete