I'm not finding anything on it yet but wonder if that small radar shown in the cutaway diagram was an early version of the AN/APG-30 fire control radar used in the F-86E/F later on to great effect, or a figment of the diagram drawers imagination.
Unlikely - teh AN/APG-20 used a fixed horn antenna. It didn't scan in azimuth or elevation, just swept the range gate out until it got a return, and locked to that. (Unless you pushed the reject button, and it would then sweep further out)
If that's a metal nose in that last photo, then it indicates to me that there wasn't any RADAR installed. Unless things have changes since I retired from being a RADAR operator, RADAR doesn't transmit through metal.