Evening Ken,
Just got in and find my connection is working again, (not wonderfully fast though). So I had a quick look at the Fright Archive with a one word search and found a three-view of the American
Bromon BR-2000; it's not a perfect match as the wingtips, flap splits, cockpit windows and front of the U/C sponsons are different, but seeing as the project was still under development, I'm going to stop looking now and bugger off into the kitchen, (I suppose it could be an unbuilt BR-1000 as the one I found looks later than yours)
!