Dirkpitt, what scale did you build? Years ago, I had the old Revell 1/48 double kit of a MiG-21 PF and the F-4 Phantom. I built the MiG half and converted it to a MiG-21 PFM with Czechoslovokian markings to match a real one that was in the old Champlin Fighter Museum in Mesa, Arizona. The Phantom half I gave away to somebody.