Yep, I was going to offer T-6/Harvard/Texan the first time around, but got fooled by what I thought was a wing fold too !
Jim, the Viper's were only in the outboard nacelles - the landing gear bay occupied the space in the inboard nacelles. Here's the retractable intake ramp, and the jet pipe on the starboard outer of the Newark Air Museum example.
Good pics Terry, much clearer than mine, mid you, I took them years ago on an old film camera. Haven't been to Newark in years; the last time I did was during a Canberra day - when I took that photo and Roland Beamont was there talking about the Canberra. very cool.