I think its a modified Fool, the upper wing appears to have been lowered and the flaps added but otherwise all the shapes and proportions look about right. The engine, in that condition, isn't worth but maybe $40 tops and most likely less, rusty outside usually means rusty inside. The airplane itself, zero, but there always seems to be someone out there that will bite. Several times I saw some weird sheet winged profile .35 powered airplane, something like "hand made original racing plane" or some such. Buy it Now $295, I know it was listed at least 3 times and never sold. Right now there's a hacked McCoy .49 with a BIN price of $255, it's been on there for months. One of those deals where the owner saw on once that sold for that and he's determined he will too. In its condition, I would give him maybe $100 for it.