In preparation for the potential "early SCCA" proxy series I picked up a Professor Motors Monogram "King Cobra" body to convert back to a non-V8 Cooper Type 61. I was surprised to see how light and small it was. I don't recall the body of my 1964 car being so "dainty". Also, while I had opened up and radiused the rear fenders to accomodate larger tires, the modern version is molded with flared and radiused rear fenders.
The "new" body has the original 1964 Monogram mark. In looking at recent epay offerings, I saw an original 60's Monogram kit in dark blue plastic, but it too appears to have the rear fender flares.
So somewhere along the way, Monogram added these to the original mold.