As requested by JayJay85, here are the line maps for the current route options for the 6-line.
Manhattan-bound 6 local from Pelham Bay Park
Manhattan-bound 6 Pelham Express/Lexington Av Local
Manhattan-bound 6 local from Parkchester
A couple of things: 1) The dimensions are correct so they should be able to fit onto the 142/142A trains that are under development and/or available for download and 2) I'm aware the line maps are not exactly as they appear on the cars in real life; it was intentional.