I just remember seeing the F-16 at Flushing Meadow in 1984 and it seemed to be much like Windy's MiG. I have no idea if either were "per plans" BeeJay designs or not, but they were definitely very close. The F-16 had a super hard corner, but the MiG flew better overall, at least to my recollection. (I was eleven then.)
Youd have to assume Windys earlier ' Big Jim ' designs were more ' out of the box ' as regards cores , airfoils etc .
Theres a " L J " fuse plan , posted by Jose , here on S.H. -> This shows the ' egg airfoil ' tailplane , like The F-16 here , with the thinner sheet elevators , as picture here ..
Theres a ' Windy 1986 B J fuse drg . about . More freehand , particularly the writing ( no shortage of that ) that appears to have convetional !? pointy airfoiled 1/2 sht tailplan & 3/8 sht. elevators .
So that photo matches a ' L J ' in that resect .