Since we are using our F7 tool as a base for our F3s, the headlight will be the same as our F7s, slightly tilted back. Drawing below is of the F7 nose.
Jonathan did provide me a matrix for F3s. The PRR is PHASE IV, with grills not chicken wire. And the number boards are the small FT style. Fans are low and there are to be antenna and other PRR specific details added such as lift rings and single horn.
Freight Pilot (SF style) shown.