I just finished sending Manuel the different seating layouts for the MNR and LIRR versions of the M7. Development is coming along smoothly, and I shall be taking time after work this week to be hitting up the Hudson line for pictures and more sound recording. I'll keep you guys posted.
Also, here are the images I sent to Manuel. If you have any corrections for these seating layouts, let me know. I did this on the fly within the last hour, working solely off of the limited pictures I could find on the internet, so I won't be able to 100% confirm these are the accurate configurations until some time later this week. LIRR M7 first; MNR M7 second: