Just found THIS here ; http://www.baronerosso.it/forum/aeromodellismo-volo-vincolato-volo-libero-ed-oldtimer/201932-u-control-o-volo-vincolato-57.html

Might be classic leagal ?? in built in / before 1970 ??

Tom Dixon has this plan listed on his web site:

FIAT G.55 -- Rabe Style semi-scale stunter of Italian WWII fighter -- 57" span for .46 to .60 engines -- by Carlo Morosini -- 1970--2 sheets. -- $15.00

http://tomdixon.tripod.com/plans2.htm  (bottom of right-hand column)