the HUD for starters

Southwest seems to use at least two different types, but I forgot the model number of the one they use on the classics,

and some of the older NG's. The new jets use the HGS 4000 I think, and has the same oval combiner as the NGX.

The older type has kind of a "coffin" shape combiner with cut corners. It might have been the HGS 3500  ?? or

something like that, but I forgot..  Been a while since I looked it up..