The B6 actually won't get the bicolor lights. The GS and one sku of the T1 will.
The B6 lights will have the red front lens and amber side lens like the K4. This is because Pennsy stopped using the green and white lights around 1934.
It will have the 5 different quilling whistle options as will all Legacy engines in the 2020 Big Book. We've picked 3 different pitch levels of the Banshee, the whistle from the M1a, and another whistle that I currently cannot recall. For the Pennsy skus anyways. For other road names, the banshee is there, but the auxiliary whistles are changed.
