I was comparing the Lancer P4 to the Riggen P4 which they modified, I believe.
Martin, this is pretty much what Gordon Brimhall (and others) did, use someone else's work and shortcut their own labor. And yes, he chopped every single one of these bodies from existing models...
By the way, the Lancer body you show is not a 1967 "P4", but a 330P3 from 1966, and it is supposed to be a spyder (one had to trim the flat part on top to open it up). Dynamic got a large number of these clear plastic bodies from Lance for the P3 kit.