well.. lets see here Cockpit - while similar, obivous differences. Canards - different shape engine intakes - on the SA43 they are higher and set into the body more than the FA40. Tailplane - Sa43 has none. wingshape - different shape / lengths now.. calling these the same is like calling a VW Golf the same as a new style beetle. may I suggest that you take another more detailed look bluepixel773? it is quite obivous that these are different aircraft.