Thanks! I figured the "spectacle" intakes on the C, being hold-overs from the P-49's belly scoop in design, would be just about ready for replacement by '48/49.
As for the E, I envisioned a (primitive) afterburner which meant a longer engine. How to accommodate this without increasing the length of the aircraft, impinging on the nose or interfering with the new thin wing in a way in keeping with late '40s/early 50's design??? Chin intake.
That or I couldn't make up my mind!!! (I am a libran!)