The Berkeley Savage kit was a 3/8" = 1' scale model and was only about a 28" wing span. (I have two kits of the thing.) The model in the photos appears to be bigger than that. Also, that model took some liberties with the shape of the engine nacelles, the vertical tail and the size shape of the canopy. The kit has carved balsa fuselage and nacelle shells and also had spun metal cowls, built up rib and fabric/tissue wing.
I know of one person who built the Berkeley kit for Carrier, but that goes back to the 60's or so. I do not know what he used for engines. The kit plans say engines from .045 to .099. (Two modern .10 engines would make this Berkely size model a rocket, but getting a good low speed would be a challenge.)
I am not aware of any plans published in the magazines for a carrier model of the Savage. There was a supurb rubber powered model, stick and tissue, about this same size published in Flying Models, Feb 86. Because of the size, I do not think there could be any relationship between that FF job and modifying it to get this carrier thing.